Philosophy

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The School of Athens (1509–1511) by Raphael, depicting famous classical Greek philosophers in an idealized setting inspired by ancient Greek architecture

Philosophy (from Greek: φιλοσοφία, philosophia, 'love of wisdom') is the study of general and fundamental questions, such as those about existence, reason, knowledge, values, mind, and language. Such questions are often posed as problems to be studied or resolved. The term was probably coined by Pythagoras (c. 570 – c. 495 BCE). Philosophical methods include questioning, critical discussion, rational argument, and systematic presentation.

Historically, philosophy encompassed all bodies of knowledge and a practitioner was known as a philosopher. From the time of Ancient Greek philosopher Aristotle to the 19th century, "natural philosophy" encompassed astronomy, medicine, and physics. For example, Newton's 1687 Mathematical Principles of Natural Philosophy later became classified as a book of physics.

In the 19th century, the growth of modern research universities led academic philosophy and other disciplines to professionalize and specialize. Since then, various areas of investigation that were traditionally part of philosophy have become separate academic disciplines, such as psychology, sociology, linguistics, and economics.

Today, major subfields of academic philosophy include metaphysics, which is concerned with the fundamental nature of existence and reality; epistemology, which studies the nature of knowledge and belief; ethics, which is concerned with moral value; and logic, which studies the rules of inference that allow one to derive conclusions from true premises. Other notable subfields include philosophy of science, political philosophy, aesthetics, philosophy of language, and philosophy of mind.

Origins and evolution

Initially the term referred to any body of knowledge. In this sense, philosophy is closely related to religion, mathematics, natural science, education, and politics. Though it has since been classified as a book of physics, Newton's Mathematical Principles of Natural Philosophy (1687) uses the term natural philosophy as it was understood at the time, encompassing disciplines such as astronomy, medicine and physics that later became associated with the sciences.

In section thirteen of his Lives and Opinions of the Eminent Philosophers, the oldest surviving history of philosophy (3rd century), Diogenes Laërtius presents a three-part division of ancient Greek philosophical inquiry:

• Natural philosophy (i.e. physics, from Greek: ta physika, lit. 'things having to do with physis [nature]') was the study of the constitution and processes of transformation in the physical world.
• Moral philosophy (i.e. ethics, from êthika, 'having to do with character, disposition, manners') was the study of goodness, right and wrong, justice and virtue.
• Metaphysical philosophy (i.e. logic, from logikós, 'of or pertaining to reason or speech') was the study of existence, causation, God, logic, forms, and other abstract objects. (meta ta physika, 'after the Physics')

In Against the Logicians the Pyrrhonist philosopher Sextus Empiricus detailed the variety of ways in which the ancient Greek philosophers had divided philosophy, noting that this three-part division was agreed to by Plato, Aristotle, Xenocrates, and the Stoics. The Academic Skeptic philosopher Cicero also followed this three-part division.

This division is not obsolete, but has changed: natural philosophy has split into the various natural sciences, especially physics, astronomy, chemistry, biology, and cosmology; moral philosophy has birthed the social sciences, while still including value theory (e.g. ethics, aesthetics, political philosophy, etc.); and metaphysical philosophy has given way to formal sciences such as logic, mathematics and philosophy of science, while still including epistemology, cosmology, etc.

Philosophical progress

Many philosophical debates that began in ancient times are still debated today. McGinn claims that no philosophical progress has occurred during that interval. Chalmers, by contrast, sees progress in philosophy similar to that in science, while Brewer argues that "progress" is the wrong standard by which to judge philosophical activity.

Historical overview

In one general sense, philosophy is associated with wisdom, intellectual culture, and a search for knowledge. In this sense, all cultures and literate societies ask philosophical questions, such as "how are we to live" and "what is the nature of reality." A broad and impartial conception of philosophy, then, finds a reasoned inquiry into such matters as reality, morality, and life in all world civilizations.

Western philosophy

Statue of Aristotle (384–322 BCE), a major figure of ancient Greek philosophy, in the Aristotlepark, Stagira

Western philosophy is the philosophical tradition of the Western world, dating back to pre-Socratic thinkers who were active in 6th-century Greece (BCE), such as Thales (c. 624 – c. 545 BCE) and Pythagoras (c. 570 – c. 495 BCE) who practiced a 'love of wisdom' (Latin: philosophia) and were also termed 'students of nature' (physiologoi).

Western philosophy can be divided into three eras:

1. Ancient (Greco-Roman).
2. Medieval philosophy (referring to Christian European thought).
3. Modern philosophy (beginning in the 17th century).

Ancient era

While our knowledge of the ancient era begins with Thales in the 6th century BCE, little is known about the philosophers who came before Socrates (commonly known as the pre-Socratics). The ancient era was dominated by Greek philosophical schools. Most notable among the schools influenced by Socrates' teachings were Plato, who founded the Platonic Academy, and his student Aristotle, who founded the Peripatetic school. Other ancient philosophical traditions influenced by Socrates included Cynicism, Cyrenaicism, Stoicism, and Academic Skepticism. Two other traditions were influenced by Socrates' contemporary, Democritus: Pyrrhonism and Epicureanism. Important topics covered by the Greeks included metaphysics (with competing theories such as atomism and monism), cosmology, the nature of the well-lived life (eudaimonia), the possibility of knowledge, and the nature of reason (logos). With the rise of the Roman empire, Greek philosophy was increasingly discussed in Latin by Romans such as Cicero and Seneca.

Medieval era

Medieval philosophy (5th–16th centuries) is the period following the fall of the Western Roman Empire and was dominated by the rise of Christianity and hence reflects Judeo-Christian theological concerns as well as retaining a continuity with Greco-Roman thought. Problems such as the existence and nature of God, the nature of faith and reason, metaphysics, the problem of evil were discussed in this period. Some key Medieval thinkers include St. Augustine, Thomas Aquinas, Boethius, Anselm and Roger Bacon. Philosophy for these thinkers was viewed as an aid to Theology (ancilla theologiae) and hence they sought to align their philosophy with their interpretation of sacred scripture. This period saw the development of Scholasticism, a text critical method developed in medieval universities based on close reading and disputation on key texts. The Renaissance period saw increasing focus on classic Greco-Roman thought and on a robust Humanism.

Modern era

A painting of the influential modern philosopher Immanuel Kant (in the blue coat) with his friends. Other figures include Christian Jakob Kraus, Johann Georg Hamann, Theodor Gottlieb von Hippel and Karl Gottfried Hagen

Early modern philosophy in the Western world begins with thinkers such as Thomas Hobbes and René Descartes (1596–1650). Following the rise of natural science, modern philosophy was concerned with developing a secular and rational foundation for knowledge and moved away from traditional structures of authority such as religion, scholastic thought and the Church. Major modern philosophers include Spinoza, Leibniz, Locke, Berkeley, Hume, and Kant.

19th-century philosophy (sometimes called late modern philosophy) was influenced by the wider 18th-century movement termed "the Enlightenment", and includes figures such as Hegel a key figure in German idealism, Kierkegaard who developed the foundations for existentialism, Nietzsche a famed anti-Christian, John Stuart Mill who promoted utilitarianism, Karl Marx who developed the foundations for communism and the American William James. The 20th century saw the split between analytic philosophy and continental philosophy, as well as philosophical trends such as phenomenology, existentialism, logical positivism, pragmatism and the linguistic turn.

Middle Eastern philosophy

Pre-Islamic philosophy

The regions of the Fertile Crescent, Iran and Arabia are home to the earliest known philosophical wisdom literature and is today mostly dominated by Islamic culture.

Early Wisdom Literature from the Fertile Crescent was a genre which sought to instruct people on ethical action, practical living and virtue through stories and proverbs. In Ancient Egypt, these texts were known as sebayt ('teachings') and they are central to our understandings of Ancient Egyptian philosophy. Babylonian astronomy also included much philosophical speculations about cosmology which may have influenced the Ancient Greeks.

Jewish philosophy and Christian philosophy are religio-philosophical traditions that developed both in the Middle East and in Europe, which both share certain early Judaic texts (mainly the Tanakh) and monotheistic beliefs. Jewish thinkers such as the Geonim of the Talmudic Academies in Babylonia and Maimonides engaged with Greek and Islamic philosophy. Later Jewish philosophy came under strong Western intellectual influences and includes the works of Moses Mendelssohn who ushered in the Haskalah (the Jewish Enlightenment), Jewish existentialism, and Reform Judaism.

The various traditions of Gnosticism, which were influenced by both Greek and Abrahamic currents, originated around the first century and emphasized spiritual knowledge (gnosis).

Pre-Islamic Iranian philosophy begins with the work of Zoroaster, one of the first promoters of monotheism and of the dualism between good and evil. This dualistic cosmogony influenced later Iranian developments such as Manichaeism, Mazdakism, and Zurvanism.

Islamic philosophy

An Iranian portrait of Avicenna on a Silver Vase. He was one of the most influential philosophers of the Islamic Golden Age.

Islamic philosophy is the philosophical work originating in the Islamic tradition and is mostly done in Arabic. It draws from the religion of Islam as well as from Greco-Roman philosophy. After the Muslim conquests, the translation movement (mid-eighth to the late tenth century) resulted in the works of Greek philosophy becoming available in Arabic.

Early Islamic philosophy developed the Greek philosophical traditions in new innovative directions. This intellectual work inaugurated what is known as the Islamic Golden Age. The two main currents of early Islamic thought are Kalam, which focuses on Islamic theology, and Falsafa, which was based on Aristotelianism and Neoplatonism. The work of Aristotle was very influential among philosophers such as Al-Kindi (9th century), Avicenna (980 – June 1037) and Averroes (12th century). Others such as Al-Ghazali were highly critical of the methods of the Islamic Aristotelians and saw their metaphysical ideas as heretical. Islamic thinkers like Ibn al-Haytham and Al-Biruni also developed a scientific method, experimental medicine, a theory of optics and a legal philosophy. Ibn Khaldun was an influential thinker in philosophy of history.

Islamic thought also deeply influenced European intellectual developments, especially through the commentaries of Averroes on Aristotle. The Mongol invasions and the destruction of Baghdad in 1258 is often seen as marking the end of the Golden Age. Several schools of Islamic philosophy continued to flourish after the Golden Age however, and include currents such as Illuminationist philosophy, Sufi philosophy, and Transcendent theosophy.

The 19th- and 20th-century Arab world saw the Nahda movement (literally meaning 'The Awakening'; also known as the 'Arab Renaissance'), which had a considerable influence on contemporary Islamic philosophy.

Eastern philosophy

Indian philosophy

Adi Shankara is one of the most frequently studied Hindu philosophers.

Indian philosophy (Sanskrit: darśana, lit. 'point of view', 'perspective') refers to the diverse philosophical traditions that emerged since the ancient times on the Indian subcontinent. Indian philosophical traditions share various key concepts and ideas, which are defined in different ways and accepted or rejected by the different traditions. These include concepts such as dhárma, karma, pramāṇa, duḥkha, saṃsāra and mokṣa.

Some of the earliest surviving Indian philosophical texts are the Upanishads of the later Vedic period (1000–500 BCE), which are considered to preserve the ideas of Brahmanism. Indian philosophy is commonly grouped based on their relationship to the Vedas and the ideas contained in them. Jainism and Buddhism originated at the end of the Vedic period, while the various traditions grouped under Hinduism mostly emerged after the Vedic period as independent traditions. Hindus generally classify Indian philosophical traditions as either orthodox (āstika) or heterodox (nāstika) depending on whether they accept the authority of the Vedas and the theories of brahman and ātman found therein.

The schools which align themselves with the thought of the Upanishads, the so-called "orthodox" or "Hindu" traditions, are often classified into six darśanas or philosophies:Sānkhya, Yoga, Nyāya, Vaisheshika, Mimāmsā and Vedānta.

The doctrines of the Vedas and Upanishads were interpreted differently by these six schools of Hindu philosophy, with varying degrees of overlap. They represent a "collection of philosophical views that share a textual connection," according to Chadha (2015). They also reflect a tolerance for a diversity of philosophical interpretations within Hinduism while sharing the same foundation.^[ii]

Hindu philosophers of the six orthodox schools developed systems of epistemology (pramana) and investigated topics such as metaphysics, ethics, psychology (guṇa), hermeneutics, and soteriology within the framework of the Vedic knowledge, while presenting a diverse collection of interpretations. The commonly named six orthodox schools were the competing philosophical traditions of what has been called the "Hindu synthesis" of classical Hinduism.

There are also other schools of thought which are often seen as "Hindu", though not necessarily orthodox (since they may accept different scriptures as normative, such as the Shaiva Agamas and Tantras), these include different schools of Shavism such as Pashupata, Shaiva Siddhanta, non-dual tantric Shavism (i.e. Trika, Kaula, etc.).

The parable of the blind men and the elephant illustrates the important Jain doctrine of anēkāntavāda

The "Hindu" and "Orthodox" traditions are often contrasted with the "unorthodox" traditions (nāstika, literally "those who reject"), though this is a label that is not used by the "unorthodox" schools themselves. These traditions reject the Vedas as authoritative and often reject major concepts and ideas that are widely accepted by the orthodox schools (such as Ātman, Brahman, and Īśvara). These unorthodox schools include Jainism (accepts ātman but rejects Īśvara, Vedas and Brahman), Buddhism (rejects all orthodox concepts except rebirth and karma), Cārvāka (materialists who reject even rebirth and karma) and Ājīvika (known for their doctrine of fate).

Jain philosophy is one of the only two surviving "unorthodox" traditions (along with Buddhism). It generally accepts the concept of a permanent soul (jiva) as one of the five astikayas (eternal, infinite categories that make up the substance of existence). The other four being dhárma, adharma, ākāśa ('space'), and pudgala ('matter'). Jain thought holds that all existence is cyclic, eternal and uncreated.

Some of the most important elements of Jain philosophy are the Jain theory of karma, the doctrine of nonviolence (ahiṃsā) and the theory of "many-sidedness" or Anēkāntavāda. The Tattvartha Sutra is the earliest known, most comprehensive and authoritative compilation of Jain philosophy.

Buddhist philosophy

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Monks debating at Sera monastery, Tibet, 2013. According to Jan Westerhoff, "public debates constituted the most important and most visible forms of philosophical exchange" in ancient Indian intellectual life.

Buddhist philosophy begins with the thought of Gautama Buddha (fl. between 6th and 4th century BCE) and is preserved in the early Buddhist texts. It originated in the Indian region of Magadha and later spread to the rest of the Indian subcontinent, East Asia, Tibet, Central Asia, and Southeast Asia. In these regions, Buddhist thought developed into different philosophical traditions which used various languages (like Tibetan, Chinese and Pali). As such, Buddhist philosophy is a trans-cultural and international phenomenon.

The dominant Buddhist philosophical traditions in East Asian nations are mainly based on Indian Mahayana Buddhism. The philosophy of the Theravada school is dominant in Southeast Asian countries like Sri Lanka, Burma and Thailand.

Because ignorance to the true nature of things is considered one of the roots of suffering (dukkha), Buddhist philosophy is concerned with epistemology, metaphysics, ethics and psychology. Buddhist philosophical texts must also be understood within the context of meditative practices which are supposed to bring about certain cognitive shifts. Key innovative concepts include the four noble truths as an analysis of dukkha, anicca (impermanence), and anatta (non-self).

After the death of the Buddha, various groups began to systematize his main teachings, eventually developing comprehensive philosophical systems termed Abhidharma. Following the Abhidharma schools, Indian Mahayana philosophers such as Nagarjuna and Vasubandhu developed the theories of śūnyatā ('emptiness of all phenomena') and vijñapti-matra ('appearance only'), a form of phenomenology or transcendental idealism. The Dignāga school of pramāṇa ('means of knowledge') promoted a sophisticated form of Buddhist epistemology.

There were numerous schools, sub-schools, and traditions of Buddhist philosophy in ancient and medieval India. According to Oxford professor of Buddhist philosophy Jan Westerhoff, the major Indian schools from 300 BCE to 1000 CE were: the Mahāsāṃghika tradition (now extinct), the Sthavira schools (such as Sarvāstivāda, Vibhajyavāda and Pudgalavāda) and the Mahayana schools. Many of these traditions were also studied in other regions, like Central Asia and China, having been brought there by Buddhist missionaries.

After the disappearance of Buddhism from India, some of these philosophical traditions continued to develop in the Tibetan Buddhist, East Asian Buddhist and Theravada Buddhist traditions.

East Asian philosophy

Statue of the Neo-Confucian scholar Zhu Xi at the White Deer Grotto Academy in Lushan Mountain

 

Kitaro Nishida, considered the founder of the Kyoto School of philosophical thought, c. 1943

East Asian philosophical thought began in Ancient China, and Chinese philosophy begins during the Western Zhou Dynasty and the following periods after its fall when the "Hundred Schools of Thought" flourished (6th century to 221 BCE). This period was characterized by significant intellectual and cultural developments and saw the rise of the major philosophical schools of China such as Confucianism (also known as Ruism), Legalism, and Taoism as well as numerous other less influential schools like Mohism and Naturalism. These philosophical traditions developed metaphysical, political and ethical theories such Tao, Yin and yang, Ren and Li. These schools of thought further developed during the Han (206 BCE – 220 CE) and Tang (618–907 CE) eras, forming new philosophical movements like Xuanxue (also called Neo-Taoism), and Neo-Confucianism. Neo-Confucianism was a syncretic philosophy, which incorporated the ideas of different Chinese philosophical traditions, including Buddhism and Taoism. Neo-Confucianism came to dominate the education system during the Song dynasty (960–1297), and its ideas served as the philosophical basis of the imperial exams for the scholar official class. Some of the most important Neo-Confucian thinkers are the Tang scholars Han Yu and Li Ao as well as the Song thinkers Zhou Dunyi (1017–1073) and Zhu Xi (1130–1200). Zhu Xi compiled the Confucian canon, which consists of the Four Books (the Great Learning, the Doctrine of the Mean, the Analects of Confucius, and the Mencius). The Ming scholar Wang Yangming (1472–1529) is a later but important philosopher of this tradition as well.

Buddhism began arriving in China during the Han Dynasty, through a gradual Silk road transmission and through native influences developed distinct Chinese forms (such as Chan/Zen) which spread throughout the East Asian cultural sphere.

Chinese culture was highly influential on the traditions of other East Asian states and its philosophy directly influenced Korean philosophy, Vietnamese philosophy and Japanese philosophy. During later Chinese dynasties like the Ming Dynasty (1368–1644) as well as in the Korean Joseon dynasty (1392–1897) a resurgent Neo-Confucianism led by thinkers such as Wang Yangming (1472–1529) became the dominant school of thought, and was promoted by the imperial state. In Japan, the Tokugawa shogunate (1603–1867) was also strongly influenced by Confucian philosophy. Confucianism continues to influence the ideas and worldview of the nations of the Chinese cultural sphere today.

In the Modern era, Chinese thinkers incorporated ideas from Western philosophy. Chinese Marxist philosophy developed under the influence of Mao Zedong, while a Chinese pragmatism developed under Hu Shih. The old traditional philosophies also began to reassert themselves in the 20th century. For example, New Confucianism, led by figures such as Xiong Shili, has become quite influential. Likewise, Humanistic Buddhism is a recent modernist Buddhist movement.

Modern Japanese thought meanwhile developed under strong Western influences such as the study of Western Sciences (Rangaku) and the modernist Meirokusha intellectual society which drew from European enlightenment thought and promoted liberal reforms as well as Western philosophies like Liberalism and Utilitarianism. Another trend in modern Japanese philosophy was the "National Studies" (Kokugaku) tradition. This intellectual trend sought to study and promote ancient Japanese thought and culture. Kokugaku thinkers such as Motoori Norinaga sought to return to a pure Japanese tradition which they called Shinto that they saw as untainted by foreign elements.

During the 20th century, the Kyoto School, an influential and unique Japanese philosophical school developed from Western phenomenology and Medieval Japanese Buddhist philosophy such as that of Dogen.

African philosophy

Painting of Zera Yacob from Claude Sumner's Classical Ethiopian Philosophy.

African philosophy is philosophy produced by African people, philosophy that presents African worldviews, ideas and themes, or philosophy that uses distinct African philosophical methods. Modern African thought has been occupied with Ethnophilosophy, with defining the very meaning of African philosophy and its unique characteristics and what it means to be African.

During the 17th century, Ethiopian philosophy developed a robust literary tradition as exemplified by Zera Yacob. Another early African philosopher was Anton Wilhelm Amo (c. 1703–1759) who became a respected philosopher in Germany. Distinct African philosophical ideas include Ujamaa, the Bantu idea of 'Force', Négritude, Pan-Africanism and Ubuntu. Contemporary African thought has also seen the development of Professional philosophy and of Africana philosophy, the philosophical literature of the African diaspora which includes currents such as black existentialism by African-Americans. Some modern African thinkers have been influenced by Marxism, African-American literature, Critical theory, Critical race theory, Postcolonialism and Feminism.

Indigenous American philosophy

A Tlamatini (Aztec philosopher) observing the stars, from the Codex Mendoza.

Indigenous-American philosophical thought consists of a wide variety of beliefs and traditions among different American cultures. Among some of U.S. Native American communities, there is a belief in a metaphysical principle called the 'Great Spirit' (Siouan: wakȟáŋ tȟáŋka; Algonquian: gitche manitou). Another widely shared concept was that of orenda ('spiritual power'). According to Whiteley (1998), for the Native Americans, "mind is critically informed by transcendental experience (dreams, visions and so on) as well as by reason." The practices to access these transcendental experiences are termed shamanism. Another feature of the indigenous American worldviews was their extension of ethics to non-human animals and plants.

In Mesoamerica, Aztec philosophy was an intellectual tradition developed by individuals called Tlamatini ('those who know something') and its ideas are preserved in various Aztec codices. The Aztec worldview posited the concept of an ultimate universal energy or force called Ōmeteōtl ('Dual Cosmic Energy') which sought a way to live in balance with a constantly changing, "slippery" world.

The theory of Teotl can be seen as a form of Pantheism. Aztec philosophers developed theories of metaphysics, epistemology, values, and aesthetics. Aztec ethics was focused on seeking tlamatiliztli ('knowledge', 'wisdom') which was based on moderation and balance in all actions as in the Nahua proverb "the middle good is necessary."

The Inca civilization also had an elite class of philosopher-scholars termed the Amawtakuna who were important in the Inca education system as teachers of religion, tradition, history and ethics. Key concepts of Andean thought are Yanantin and Masintin which involve a theory of “complementary opposites” that sees polarities (such as male/female, dark/light) as interdependent parts of a harmonious whole.

Women in philosophy

Mary Wollstonecraft (1759-1797) was an English writer and philosopher.

Although men have generally dominated philosophical discourse, women philosophers have engaged in the discipline throughout history. Ancient examples include Hipparchia of Maroneia (active c. 325 BCE) and Arete of Cyrene (active 5th–4th centuries BCE). Some women philosophers were accepted during the medieval and modern eras, but none became part of the Western canon until the 20th and 21st century, when many suggest that G.E.M. Anscombe, Hannah Arendt, Simone de Beauvoir, and Susanne Langer entered the canon.

In the early 1800s, some colleges and universities in the UK and US began admitting women, producing more female academics. Nevertheless, U.S. Department of Education reports from the 1990s indicate that few women ended up in philosophy, and that philosophy is one of the least gender-proportionate fields in the humanities, with women making up somewhere between 17% and 30% of philosophy faculty according to some studies.

Branches of philosophy

Philosophical questions can be grouped into various branches. These groupings allow philosophers to focus on a set of similar topics and interact with other thinkers who are interested in the same questions.

These divisions are neither exhaustive, nor mutually exclusive. (A philosopher might specialize in Kantian epistemology, or Platonic aesthetics, or modern political philosophy). Furthermore, these philosophical inquiries sometimes overlap with each other and with other inquiries such as science, religion or mathematics.

Aesthetics

Aesthetics is the "critical reflection on art, culture and nature." It addresses the nature of art, beauty and taste, enjoyment, emotional values, perception and with the creation and appreciation of beauty. It is more precisely defined as the study of sensory or sensori-emotional values, sometimes called judgments of sentiment and taste. Its major divisions are art theory, literary theory, film theory and music theory. An example from art theory is to discern the set of principles underlying the work of a particular artist or artistic movement such as the Cubist aesthetic.

Ethics

The Beijing imperial college was an intellectual center for Confucian ethics and classics during the Yuan, Ming and Qing dynasties.

Ethics, also known as moral philosophy, studies what constitutes good and bad conduct, right and wrong values, and good and evil. Its primary investigations include how to live a good life and identifying standards of morality. It also includes investigating whether or not there is a best way to live or a universal moral standard, and if so, how we come to learn about it. The main branches of ethics are normative ethics, meta-ethics and applied ethics.

The three main views in ethics about what constitute moral actions are:

• Consequentialism, which judges actions based on their consequences. One such view is utilitarianism, which judges actions based on the net happiness (or pleasure) and/or lack of suffering (or pain) that they produce.
• Deontology, which judges actions based on whether or not they are in accordance with one's moral duty. In the standard form defended by Immanuel Kant, deontology is concerned with whether or not a choice respects the moral agency of other people, regardless of its consequences.
• Virtue ethics, which judges actions based on the moral character of the agent who performs them and whether they conform to what an ideally virtuous agent would do.

Epistemology

Dignaga founded a school of Buddhist epistemology and logic.

Epistemology is the branch of philosophy that studies knowledge. Epistemologists examine putative sources of knowledge, including perceptual experience, reason, memory, and testimony. They also investigate questions about the nature of truth, belief, justification, and rationality.

Philosophical skepticism, which raises doubts about some or all claims to knowledge, has been a topic of interest throughout the history of philosophy. It arose early in Pre-Socratic philosophy and became formalized with Pyrrho, the founder of the earliest Western school of philosophical skepticism. It features prominently in the works of modern philosophers René Descartes and David Hume, and has remained a central topic in contemporary epistemological debates.

One of the most notable epistemological debates is between empiricism and rationalism. Empiricism places emphasis on observational evidence via sensory experience as the source of knowledge. Empiricism is associated with a posteriori knowledge, which is obtained through experience (such as scientific knowledge). Rationalism places emphasis on reason as a source of knowledge. Rationalism is associated with a priori knowledge, which is independent of experience (such as logic and mathematics).

One central debate in contemporary epistemology is about the conditions required for a belief to constitute knowledge, which might include truth and justification. This debate was largely the result of attempts to solve the Gettier problem. Another common subject of contemporary debates is the regress problem, which occurs when trying to offer proof or justification for any belief, statement, or proposition. The problem is that whatever the source of justification may be, that source must either be without justification (in which case it must be treated as an arbitrary foundation for belief), or it must have some further justification (in which case justification must either be the result of circular reasoning, as in coherentism, or the result of an infinite regress, as in infinitism).

Metaphysics

The beginning of Aristotle's Metaphysics in an incunabulum decorated with hand-painted miniatures.

Metaphysics is the study of the most general features of reality, such as existence, time, objects and their properties, wholes and their parts, events, processes and causation and the relationship between mind and body. Metaphysics includes cosmology, the study of the world in its entirety and ontology, the study of being.

A major point of debate is between realism, which holds that there are entities that exist independently of their mental perception and idealism, which holds that reality is mentally constructed or otherwise immaterial. Metaphysics deals with the topic of identity. Essence is the set of attributes that make an object what it fundamentally is and without which it loses its identity while accident is a property that the object has, without which the object can still retain its identity. Particulars are objects that are said to exist in space and time, as opposed to abstract objects, such as numbers, and universals, which are properties held by multiple particulars, such as redness or a gender. The type of existence, if any, of universals and abstract objects is an issue of debate.

Logic

Logic is the study of reasoning and argument.

Deductive reasoning is when, given certain premises, conclusions are unavoidably implied. Rules of inference are used to infer conclusions such as, modus ponens, where given “A” and “If A then B”, then “B” must be concluded.

Because sound reasoning is an essential element of all sciences, social sciences and humanities disciplines, logic became a formal science. Sub-fields include mathematical logic, philosophical logic, Modal logic, computational logic and non-classical logics. A major question in the philosophy of mathematics is whether mathematical entities are objective and discovered, called mathematical realism, or invented, called mathematical antirealism.

Other subfields

Mind and language

Philosophy of language explores the nature, origins, and use of language. Philosophy of mind explores the nature of the mind and its relationship to the body, as typified by disputes between materialism and dualism. In recent years, this branch has become related to cognitive science.

Philosophy of science

The philosophy of science explores the foundations, methods, history, implications and purpose of science. Many of its subdivisions correspond to specific branches of science. For example, philosophy of biology deals specifically with the metaphysical, epistemological and ethical issues in the biomedical and life sciences.

Political philosophy

Thomas Hobbes, best known for his Leviathan, which expounded an influential formulation of social contract theory.

Political philosophy is the study of government and the relationship of individuals (or families and clans) to communities including the state. It includes questions about justice, law, property and the rights and obligations of the citizen. Political philosophy, ethics, and aesthetics are traditionally linked subjects, under the general heading of value theory as they involve a normative or evaluative aspect.

Philosophy of religion

Philosophy of religion deals with questions that involve religion and religious ideas from a philosophically neutral perspective (as opposed to theology which begins from religious convictions). Traditionally, religious questions were not seen as a separate field from philosophy proper, the idea of a separate field only arose in the 19th century.

Issues include the existence of God, the relationship between reason and faith, questions of religious epistemology, the relationship between religion and science, how to interpret religious experiences, questions about the possibility of an afterlife, the problem of religious language and the existence of souls and responses to religious pluralism and diversity.

Metaphilosophy

Metaphilosophy explores the aims of philosophy, its boundaries and its methods.

Applied and professional philosophy

Martin Luther King Jr.

Some of those who study philosophy become professional philosophers, typically by working as professors who teach, research and write in academic institutions. However, most students of academic philosophy later contribute to law, journalism, religion, sciences, politics, business, or various arts. For example, public figures who have degrees in philosophy include comedians Steve Martin and Ricky Gervais, filmmaker Terrence Malick, Pope John Paul II, Wikipedia co-founder Larry Sanger, technology entrepreneur Peter Thiel, U.S. Supreme Court Justice Stephen Bryer and US vice presidential candidate Carly Fiorina. Curtis White has argued that philosophical tools are essential to humanities, sciences and social sciences.

Recent efforts to avail the general public to the work and relevance of philosophers include the million-dollar Berggruen Prize, first awarded to Charles Taylor in 2016. Some philosophers argue that this professionalization has negatively affected the discipline.

Environmental philosophy

From Wikipedia, the free encyclopedia

Environmental philosophy is a branch of philosophy that is concerned with the natural environment and humans' place within it. It asks crucial questions about human environmental relations such as "What do we mean when we talk about nature?" "What is the value of the natural, that is non-human environment to us, or in itself?" "How should we respond to environmental challenges such as environmental degradation, pollution and climate change?" "How can we best understand the relationship between the natural world and human technology and development?" and "What is our place in the natural world?" Environmental philosophy includes environmental ethics, environmental aesthetics, ecofeminism, environmental hermeneutics, and environmental theology. Some of the main areas of interest for environmental philosophers are:

Marco Casagrande Sandworm, Beaufort04 Triennial of Contemporary Art, Wenduine, Belgium 2012

• Defining environment and nature
• How to value the environment
• Moral status of animals and plants
• Endangered species
• Environmentalism and deep ecology
• Aesthetic value of nature
• Intrinsic value
• Wilderness
• Restoration of nature
• Consideration of future generations
• Ecophenomenology

Contemporary issues

Modern issues within environmental philosophy include but are not restricted to the concerns of environmental activism, questions raised by science and technology, environmental justice, and climate change. These include issues related to the depletion of finite resources and other harmful and permanent effects brought on to the environment by humans, as well as the ethical and practical problems raised by philosophies and practices of environmental conservation, restoration, and policy in general. Another question that has settled on the minds of modern environmental philosophers is "Do rivers have rights?" At the same time environmental philosophy deals with the value human beings attach to different kinds of environmental experience, particularly how experiences in or close to non-human environments contrast with urban or industrialized experiences, and how this varies across cultures with close attention paid to indigenous people.

Modern history

Environmental philosophy emerged as a branch of philosophy in 1970s. Early environmental philosophers include Richard Routley, Arne Næss, and J. Baird Callicott. The movement was an attempt to connect with humanity's sense of alienation from nature in a continuing fashion throughout history. This was very closely related to the development at the same time of ecofeminism, an intersecting discipline. Since then its areas of concern have expanded significantly.

The field is today characterized by a notable diversity of stylistic, philosophical and cultural approaches to human environmental relationships, from personal and poetic reflections on environmental experience and arguments for panpsychism to Malthusian applications of game theory or the question of how to put an economic value on nature's services. A major debate arose in the 1970s and 80s was that of whether nature has intrinsic value in itself independent of human values or whether its value is merely instrumental, with ecocentric or deep ecology approaches emerging on the one hand versus consequentialist or pragmatist anthropocentric approaches on the other.

Another debate that arose at this time was the debate over whether there really is such a thing as wilderness or not, or whether it is merely a cultural construct with colonialist implications as suggested by William Cronon. Since then, readings of environmental history and discourse have become more critical and refined. In this ongoing debate, a diversity of dissenting voices have emerged from different cultures around the world questioning the dominance of Western assumptions, helping to transform the field into a global area of thought.

In recent decades, there has been a significant challenge to deep ecology and the concepts of nature that underlie it, some arguing that there is not really such a thing as nature at all beyond some self-contradictory and even politically dubious constructions of an ideal other that ignore the real human-environmental interactions that shape our world and lives. This has been alternately dubbed the postmodern, constructivist, and most recently post-naturalistic turn in environmental philosophy. Environmental aesthetics, design and restoration have emerged as important intersecting disciplines that keep shifting the boundaries of environmental thought, as have the science of climate change and biodiversity and the ethical, political and epistemological questions they raise.

Deep ecology movement

In 1984, George Sessions and Arne Næss articulated the principles of the new Deep Ecology Movement. These basic principles are:

• The well-being and flourishing of human and non-human life have value.
• Richness and diversity of life forms contribute to the realization of these values and are also values in themselves.
• Humans have no right to reduce this richness and diversity except to satisfy vital needs.
• The flourishing of human life and cultures is compatible with a substantial decrease in the human population.
• Present human interference with the nonhuman world is excessive, and the situation is rapidly worsening.
• Policies must therefore be changed. These policies affect basic economic, technological, and ideological structures. The resulting state of affairs will be deeply different from the present.
• The ideological change is mainly that of appreciating life quality (dwelling in situations of inherent value), rather than adhering to an increasingly higher standard of living. There will be a profound awareness of the difference between big and great.
• Those who subscribe to the foregoing points have an obligation directly or indirectly to try to implement the necessary changes.

 

Wisdom

From Wikipedia, the free encyclopedia

https://en.wikipedia.org/wiki/Wisdom 

Wisdom Defending Youth Against Love by Meynier, c. 1810

Wisdom, sapience, or sagacity is the ability to think and act using knowledge, experience, understanding, common sense and insight. Wisdom is associated with attributes such as unbiased judgment, compassion, experiential self-knowledge, self-transcendence and non-attachment, and virtues such as ethics and benevolence.

Wisdom has been defined in many different ways, including several distinct approaches to assess the characteristics attributed to wisdom.

Definitions

Early mention of wisdom in Beowulf

The Oxford English Dictionary defines wisdom as "Capacity of judging rightly in matters relating to life and conduct; soundness of judgement in the choice of means and ends; sometimes, less strictly, sound sense, esp. in practical affairs: opp. to folly;" also "Knowledge (esp. of a high or abstruse kind); enlightenment, learning, erudition." Charles Haddon Spurgeon defined wisdom as "the right use of knowledge". Robert I. Sutton and Andrew Hargadon defined the "attitude of wisdom" as "acting with knowledge while doubting what one knows". Psycanics defines wisdom as "the ability to foresee the consequences of action" (allowing one to avoid negative consequences and produce the desired positive ones.) In social and psychological sciences, several distinct approaches to wisdom exist, with major advances made in the last two decades with respect to operationalization and measurement of wisdom as a psychological construct. Wisdom is the capacity to have foreknowledge of something, to know the consequences (both positive and negative) of all the available course of actions, and to yield or take the options with the most advantage either for present or future implication.

Mythological and philosophical perspectives

The ancient Greeks considered wisdom to be an important virtue, personified as the goddesses Metis and Athena. Metis was the first wife of Zeus, who, according to Hesiod's Theogony, had devoured her pregnant; Zeus earned the title of Mêtieta ("The Wise Counselor") after that, as Metis was the embodiment of wisdom, and he gave birth to Athena, who is said to have sprung from his head. Athena was portrayed as strong, fair, merciful, and chaste. Apollo was also considered a god of wisdom, designated as the conductor of the Muses (Musagetes), who were personifications of the sciences and of the inspired and poetic arts; According to Plato in his Cratylus, the name of Apollo could also mean "Ballon" (archer) and "Omopoulon" (unifier of poles [divine and earthly]), since this god was responsible for divine and true inspirations, thus considered an archer who was always right in healing and oracles: "he is an ever-darting archer". Apollo was considered the god who prophesied through the priestesses (Pythia) in the Temple of Apollo (Delphi), where the aphorism "know thyself" (gnōthi seauton)^[a] was inscribed (part of the wisdom of the Delphic maxims). He was contrasted with Hermes, who was related to the sciences and technical wisdom, and, in the first centuries after Christ, was associated with Thoth in an Egyptian syncretism, under the name Hermes Trimegistus. Greek tradition recorded the earliest introducers of wisdom in the Seven Sages of Greece.

To Socrates and Plato, philosophy was literally the love of wisdom (philo-sophia). This permeates Plato's dialogues; in The Republic the leaders of his proposed utopia are philosopher kings who understand the Form of the Good and possess the courage to act accordingly. Aristotle, in Metaphysics, defined wisdom as understanding why things are a certain way (causality), which is deeper than merely knowing things are a certain way. He was the first to make the distinction between phronesis and sophia.

According to Plato and Xenophon, the Pythia of the Delphic Oracle answered the question "who is the wisest man in Greece?" by stating Socrates was the wisest. According to Plato's Apology, Socrates decided to investigate the people who might be considered wiser than him, concluding they lacked true knowledge:

[…] οὗτος μὲν οἴεταί τι εἰδέναι οὐκ εἰδώς, ἐγὼ δέ, ὥσπερ οὖν οὐκ οἶδα, οὐδὲ οἴομαι [I am wiser than this man; for neither of us really knows anything fine and good, but this man thinks he knows something when he does not, whereas I, as I do not know anything, do not think I do either.]

— Apology to Socrates 21d

Thus it became popularly immortalized in the phrase "I know that I know nothing" that it is wise to recognize one's own ignorance and to value epistemic humility.

The ancient Romans also valued wisdom which was personified in Minerva, or Pallas. She also represents skillful knowledge and the virtues, especially chastity. Her symbol was the owl which is still a popular representation of wisdom, because it can see in darkness. She was said to be born from Jupiter's forehead.

Wisdom is also important within Christianity. Jesus emphasized it. Paul the Apostle, in his first epistle to the Corinthians, argued that there is both secular and divine wisdom, urging Christians to pursue the latter. Prudence, which is intimately related to wisdom, became one of the four cardinal virtues of Catholicism. The Christian philosopher Thomas Aquinas considered wisdom to be the "father" (i.e. the cause, measure, and form) of all virtues.

In Buddhist traditions, developing wisdom plays a central role where comprehensive guidance on how to develop wisdom is provided. In the Inuit tradition, developing wisdom was one of the aims of teaching. An Inuit Elder said that a person became wise when they could see what needed to be done and did it successfully without being told what to do.

In many cultures, the name for third molars, which are the last teeth to grow, is etymologically linked with wisdom, e.g., as in the English wisdom tooth. It has its nickname originated from the classical tradition, which in the Hippocratic writings has already been called sóphronistér (in Greek, related to the meaning of moderation or teaching a lesson), and in Latin dens sapientiae (wisdom tooth), since they appear at the age of maturity in late adolescence and early adulthood.

Educational perspectives

Truth and Wisdom assist History in writing by Jacob de Wit, 1754

Public schools in the US have an approach to character education. Eighteenth century thinkers such as Benjamin Franklin, referred to this as training wisdom and virtue. Traditionally, schools share the responsibility to build character and wisdom along with parents and the community.

Nicholas Maxwell, a contemporary philosopher in the United Kingdom, advocates that academia ought to alter its focus from the acquisition of knowledge to seeking and promoting wisdom. This he defines as the capacity to realize what is of value in life, for oneself and others. He teaches that new knowledge and technological know-how increase our power to act. Without wisdom though, Maxwell claims this new knowledge may cause human harm as well as human good.

Psychological perspectives

Psychologists have begun to gather data on commonly held beliefs or folk theories about wisdom. Initial analyses indicate that although "there is an overlap of the implicit theory of wisdom with intelligence, perceptiveness, spirituality and shrewdness, it is evident that wisdom is an expertise in dealing with difficult questions of life and adaptation to the complex requirements."

Such implicit theories stand in contrast to the explicit theories and empirical research on resulting psychological processes underlying wisdom. Opinions on the exact psychological definitions of wisdom vary, but there is some consensus that critical to wisdom are certain meta-cognitive processes affording life reflection and judgment about critical life matters. These processes include recognizing the limits of one's own knowledge, acknowledging uncertainty and change, attention to context and the bigger picture, and integrating different perspectives of a situation. Cognitive scientists suggest that wisdom requires coordinating such reasoning processes, as they may provide insightful solutions for managing one's life. Notably, such reasoning is both theoretically and empirically distinct from general intelligence. Robert Sternberg has suggested that wisdom is not to be confused with general (fluid or crystallized) intelligence. In line with this idea, researchers have shown empirically that wise reasoning is distinct from IQ. Several more nuanced characterizations of wisdom are listed below.

Baltes and colleagues in Wisdom: its structure and function in regulating lifespan successful development defined wisdom as "the ability to deal with the contradictions of a specific situation and to assess the consequences of an action for themselves and for others. It is achieved when in a concrete situation, a balance between intrapersonal, inter- personal and institutional interests can be prepared". Balance itself appears to be a critical criterion of wisdom. Empirical research started to provide support to this idea, showing that wisdom-related reasoning is associated with achieving balance between intrapersonal and interpersonal interests when facing personal life challenges, and when setting goals for managing interpersonal conflicts.

Researchers in the field of positive psychology have defined wisdom as the coordination of "knowledge and experience" and "its deliberate use to improve well being." Under this definition, wisdom is further defined with the following facets:

• Problem Solving with self-knowledge and sustainable actions.
• Contextual sincerity to the circumstances with knowledge of its negative (or constraints) and positive aspects.
• Value based consistent actions with knowledge of diversity in ethical opinions.
• Tolerance towards uncertainty in life with unconditional acceptance.
• Empathy with oneself to understand one's own emotions (or to be emotionally oriented), morals...etc. and others feelings including the ability to see oneself as part of a larger whole.

This theoretical model has not been tested empirically, with an exception of a broad link between wisdom-related reasoning and well-being.

Grossmann and colleagues have synthesized prior psychological literature, indicating that in the face of ill-defined life situations wisdom involves certain cognitive processes affording unbiased, sound judgment: (i) intellectual humility or recognition of limits of own knowledge; (ii) appreciation of perspectives broader than the issue at hand; (iii) sensitivity to the possibility of change in social relations; and (iv) compromise or integration of different perspectives. Grossmann found that habitual speaking and thinking of oneself in the third person increases these characteristics, which means that such a habit makes a person wiser. Importantly, Grossmann highlights the fundamental role of contextual factors, including the role of culture, experiences, and social situations for understanding, development, and propensity of showing wisdom, with implications for training and educational practice. This situated account of wisdom ushered a novel phase of wisdom scholarship, using rigorous evidence-based methods to understand contextual factors affording sound judgment. For instance, Grossmann and Kross have identified a phenomenon they called "the Solomon's paradox" - wiser reflections on other people's problems as compared to one's own. It is named after King Solomon, the third leader of the Jewish Kingdom, who has shown a great deal of wisdom when making judgments about other people's dilemmas but lacked insight when it came to important decisions in his own life.

Empirical scientists have also begun to focus on the role of emotions in wisdom. Most researchers would agree that emotions and emotion regulation would be key to effectively managing the kinds of complex and arousing situations that would most call for wisdom. However, much empirical research has focused on the cognitive or meta-cognitive aspects of wisdom, assuming that an ability to reason through difficult situations would be paramount. Thus, although emotions would likely play a role in determining how wisdom plays out in real events and on reflecting on past events, only recently has empirical evidence started to provide robust evidence on how and when different emotions improve or harm a person's ability to deal wisely with complex events. One notable finding concerns the positive relationship between diversity of emotional experience and wise reasoning, irrespective of emotional intensity.

Measuring wisdom

Measurement of wisdom often depends on researcher's theoretical position about the nature of wisdom. A major distinction here concerning either viewing wisdom as a stable personality trait or rather as a context-bound process The former approach often capitalizes on single-shot questionnaires. However, recent studies indicated that such single-shot questionnaires produce biased responses, which is antithetical to the wisdom construct and neglects the notion that wisdom is best understood in the contexts when it is most relevant, namely in complex life challenges. In contrast, the latter approach advocates for measuring wisdom-related features of cognition, motivation, and emotion on the level of a specific situation. Use of such state-level measures provides less biased responses as well as greater power in explaining meaningful psychological processes. Furthermore, a focus on the level of the situation has allowed wisdom researchers to develop a fuller understanding of the role of context itself for producing wisdom. Specifically, studies showed evidence of cross-cultural and within-cultural variability and systematic variability in reasoning wisely across contexts and in daily life.

Many, but not all, studies find that adults' self-ratings of perspective and wisdom do not depend on age. This belief stands in contrast to the popular notion that wisdom increases with age. The answer to the question of age-wisdom association depends on how one defines wisdom, and the methodological framework used to evaluate theoretical claims. Most recent work suggests that the answer to this question also depends on the degree of experience in a specific domain, with some contexts favoring older adults, others favoring younger adults, and some not differentiating age groups. Notably, rigorous longitudinal work is necessary to fully unpack the question of age-wisdom relationship and such work is still outstanding, with most studies relying on cross-sectional observations.

Sapience

Sapience is closely related to the term "sophia" often defined as "transcendent wisdom", "ultimate reality", or the ultimate truth of things. Sapiential perspective of wisdom is said to lie in the heart of every religion, where it is often acquired through intuitive knowing. This type of wisdom is described as going beyond mere practical wisdom and includes self-knowledge, interconnectedness, conditioned origination of mind-states and other deeper understandings of subjective experience. This type of wisdom can also lead to the ability of an individual to act with appropriate judgement, a broad understanding of situations and greater appreciation/compassion towards other living beings.

The word sapience is derived from the Latin sapientia, meaning "wisdom". The corresponding verb sapere has the original meaning of "to taste", hence "to perceive, to discern" and "to know"; its present participle sapiens was chosen by Carl Linnaeus for the Latin binomial for the human species, Homo sapiens.

Religious perspectives

Ancient Near East

In Mesopotamian religion and mythology, Enki, also known as Ea, was the God of wisdom and intelligence. Divine Wisdom allowed the provident designation of functions and the ordering of the cosmos, and it was achieved by humans in following me-s (in Sumerian, order, rite, righteousness), restoring the balance. In addition to hymns to Enki or Ea dating from the third millennium BC., there is amongst the clay tablets of Abu Salabikh from 2600 BC, considered as being the oldest dated texts, an "Hymn to Shamash", in which it is recorded written:

Wide is the courtyard of Shamash night chamber, (just as wide is the womb of) a wise pregnant woman! Sin, his warrior, wise one, heard of the offerings and came down to his fiesta. He is the father of the nation and the father of intelligence

The concept of Logos or manifest word of the divine thought, a concept also present in the philosophy and hymns of Egypt and Ancient Greece (being central to the thinker Heraclitus), and substantial in the Abrahamic traditions, seems to have been derived from Mesopotamian culture.

Sia represents the personification of perception and thoughtfulness in the traditional mythology adhered to in Ancient Egypt. Thoth, married to Maat (in ancient Egyptian, meaning order, righteousness, truth), was also important and regarded as a national introducer of wisdom.

Zoroastrianism

In the Avesta hymns traditionally attributed to Zoroaster, the Gathas, Ahura Mazda means "Lord" (Ahura) and "Wisdom" (Mazda), and it is the central deity who embodies goodness, being also called "Good Thought" (Vohu Manah). In Zoroastrianism in general, the order of the universe and morals is called Asha (in Avestan, truth, righteousness), which is determined by the designations of this omniscient Thought and also considered a deity emanating from Ahura (Amesha Spenta); it is related to another ahura deity, Spenta Mainyu (active Mentality). It says in Yazna 31:

To him shall the best befall, who, as one that knows, speaks to me Right's truthful word of Welfare and of Immortality; even the Dominion of Mazda which Good Thought shall increase for him. About which he in the beginning thus thought, "let the blessed realms be filled with Light", he it is that by his wisdom created Right.

Hebrew Bible and Judaism

The word wisdom (חכם) is mentioned 222 times in the Hebrew Bible. It was regarded as one of the highest virtues among the Israelites along with kindness (חסד) and justice (צדק). Both the books of Proverbs and Psalms urge readers to obtain and to increase in wisdom.

In the Hebrew Bible, wisdom is represented by Solomon, who asks God for wisdom in 2 Chronicles 1:10. Much of the Book of Proverbs, which is filled with wise sayings, is attributed to Solomon. In Proverbs 9:10, the fear of the Lord is called the beginning of wisdom. In Proverbs 1:20, there is also reference to wisdom personified in female form, "Wisdom calls aloud in the streets, she raises her voice in the marketplaces." In Proverbs 8:22–31, this personified wisdom is described as being present with God before creation began and even taking part in creation itself.

The Talmud teaches that a wise person is a person who can foresee the future. Nolad is a Hebrew word for "future," but also the Hebrew word for birth, so one rabbinic interpretation of the teaching is that a wise person is one who can foresee the consequences of his/her choices (i.e. can "see the future" that he/she "gives birth" to).

Hellenistic religion and Gnosticism

Christian theology

In Christian theology, "wisdom" (From Hebrew: חכמה transliteration: chokmâh pronounced: khok-maw', Greek: Sophia, Latin: Sapientia) describes an aspect of God, or the theological concept regarding the wisdom of God.

David and Abigail, Abigail was a "wise woman" who helped David, 1860 woodcut by Julius Schnorr von Karolsfeld

There is an oppositional element in Christian thought between secular wisdom and Godly wisdom. Paul the Apostle states that worldly wisdom thinks the claims of Christ to be foolishness. However, to those who are "on the path to salvation" Christ represents the wisdom of God (1 Corinthians 1:17–31). Wisdom is considered one of the seven gifts of the Holy Spirit according to Anglican, Catholic, and Lutheran belief. 1 Corinthians 12:8–10 gives an alternate list of nine virtues, among which wisdom is one.

The book of Proverbs in the Old Testament of the Bible primarily focuses on wisdom, and was primarily written by one of the wisest kings according to Jewish history, King Solomon. Proverbs is found in the Old Testament section of the Bible and gives direction on how to handle various aspects of life; one's relationship with God, marriage, dealing with finances, work, friendships and persevering in difficult situations faced in life.

Solomon and Lady Wisdom by Julius Schnorr von Karolsfeld, 1860

According to King Solomon, wisdom is gained from God, "For the Lord gives wisdom; from His mouth come knowledge and understanding" Proverbs 2:6. And through God's wise aide, one can have a better life: "He holds success in store for the upright, he is a shield to those whose walk is blameless, for he guards the course of the just and protects the way of his faithful ones" Proverbs 2:7-8. "Trust in the LORD with all your heart and lean not on your own understanding; in all your ways submit to him, and he will make your paths straight" Proverbs 3:5-6. Solomon basically states that with the wisdom one receives from God, one will be able to find success and happiness in life.

There are various verses in Proverbs that contain parallels of what God loves, which is wise, and what God does not love, which is foolish. For example, in the area of good and bad behaviour Proverbs states, "The way of the wicked is an abomination to the Lord, But He loves him who pursues righteousness (Proverbs 15:9). In relation to fairness and business it is stated that, "A false balance is an abomination to the Lord, But a just weight is His delight" (Proverbs 11:1; cf. 20:10,23). On the truth it is said, "Lying lips are an abomination to the Lord, But those who deal faithfully are His delight" (12:22; cf. 6:17,19). These are a few examples of what, according to Solomon, are good and wise in the eyes of God, or bad and foolish, and in doing these good and wise things, one becomes closer to God by living in an honorable and kind manner.

Solomon's Wisdom, 1860 woodcut by Julius Schnorr von Karolsfeld

King Solomon continues his teachings of wisdom in the book of Ecclesiastes, which is considered one of the most depressing books of the Bible. Solomon discusses his exploration of the meaning of life and fulfillment, as he speaks of life's pleasures, work, and materialism, yet concludes that it is all meaningless. "'Meaningless! Meaningless!" says the Teacher [Solomon]. 'Utterly meaningless! Everything is meaningless'...For with much wisdom comes much sorrow, the more knowledge, the more grief" (Ecclesiastes 1:2,18) Solomon concludes that all life's pleasures and riches, and even wisdom, mean nothing if there is no relationship with God.

The book of James, written by the apostle James, is said to be the New Testament version of the book of Proverbs, in that it is another book that discusses wisdom. It reiterates Proverbs message of wisdom coming from God by stating, "If any of you lacks wisdom, you should ask God, who gives generously to all without finding fault, and it will be given to you." James 1:5. James also explains how wisdom helps one acquire other forms of virtue, "But the wisdom that comes from heaven is first of all pure; then peace-loving, considerate, submissive, full of mercy and good fruit, impartial and sincere." James 3:17. In addition, through wisdom for living James focuses on using this God-given wisdom to perform acts of service to the less fortunate.

Apart from Proverbs, Ecclesiastes, and James, other main books of wisdom in the Bible are Job, Psalms, and 1 and 2 Corinthians, which give lessons on gaining and using wisdom through difficult situations.

Indian religions

In the Indian traditions, wisdom can be called prajña or vijñana.

Developing wisdom is of central importance in Buddhist traditions, where the ultimate aim is often presented as "seeing things as they are" or as gaining a "penetrative understanding of all phenomena", which in turn is described as ultimately leading to the "complete freedom from suffering". In Buddhism, developing wisdom is accomplished through an understanding of what are known as the Four Noble Truths and by following the Noble Eightfold Path. This path lists mindfulness as one of eight required components for cultivating wisdom.

Buddhist scriptures teach that a wise person is usually endowed with good and maybe bodily conduct, and sometimes good verbal conduct, and good mental conduct.(AN 3:2) A wise person does actions that are unpleasant to do but give good results, and doesn't do actions that are pleasant to do but give bad results (AN 4:115). Wisdom is the antidote to the self-chosen poison of ignorance. The Buddha has much to say on the subject of wisdom including:

• He who arbitrates a case by force does not thereby become just (established in Dhamma). But the wise man is he who carefully discriminates between right and wrong.
• He who leads others by nonviolence, righteously and equitably, is indeed a guardian of justice, wise and righteous.
• One is not wise merely because he talks much. But he who is calm, free from hatred and fear, is verily called a wise man.
• By quietude alone one does not become a sage (muni) if he is foolish and ignorant. But he who, as if holding a pair of scales, takes the good and shuns the evil, is a wise man; he is indeed a muni by that very reason. He who understands both good and evil as they really are, is called a true sage.

To recover the original supreme wisdom of self-nature (Buddha-nature or Tathagata) covered by the self-imposed three dusty poisons (the kleshas: greed, anger, ignorance) Buddha taught to his students the threefold training by turning greed into generosity and discipline, anger into kindness and meditation, ignorance into wisdom. As the Sixth Patriarch of Chán Buddhism, Huineng, said in his Platform Sutra,"Mind without dispute is self-nature discipline, mind without disturbance is self-nature meditation, mind without ignorance is self-nature wisdom." In Mahayana and esoteric buddhist lineages, Mañjuśrī is considered as an embodiment of Buddha wisdom.

In Hinduism, wisdom is considered a state of mind and soul where a person achieves liberation.

The god of wisdom is Ganesha and the goddess of knowledge is Saraswati.

The Sanskrit verse to attain knowledge is:

असतो मा सद्गमय । Asatō mā sadgamaya
तमसो मा ज्योतिर्गमय । tamasō mā jyōtirgamaya
मृत्योर्मा अमृतं गमय । mr̥tyōrmā amr̥taṁ gamaya
ॐ शान्तिः शान्तिः शान्तिः ॥ Om śāntiḥ śāntiḥ śāntiḥ
- Br̥hadāraṇyakopaniṣat 1.3.28

"Lead me from the unreal to the real.

Lead me from darkness to light.

Lead me from death to immortality.

May there be peace, peace, and peace".

Brihadaranyaka Upanishad 1.3.28.

Wisdom in Hinduism is knowing oneself as the truth, basis for the entire Creation, i.e., of Shristi. In other words, wisdom simply means a person with Self-awareness as the one who witnesses the entire creation in all its facets and forms. Further it means realization that an individual through right conduct and right living over an unspecified period comes to realize their true relationship with the creation and the Paramatma.

Islam

The Arabic term corresponding to Hebrew Chokmah is حكمة ḥikma. The term occurs a number of times in the Quran, notably in Sura 2:269: "He gives wisdom to whom He wills, and whoever has been given wisdom has certainly been given much good. And none will remember except those of understanding." (Quran 2:269). and Sura 22:46: "Have they not travelled in the land, and have they hearts wherewith to feel and ears wherewith to hear? For indeed it is not the eyes that grow blind, but it is the hearts, which are within the bosoms, that grow blind."Quran 22:46 Sura 6: 151: "Say: "Come, I will rehearse what Allah (God) hath (really) prohibited you from": Join not anything as equal with Him; be good to your parents; kill not your children on a plea of want;― We provide sustenance for you and for them;― come not nigh to shameful deeds, whether open or secret; take not life, which Allah hath made sacred, except by way of justice and law: thus doth He command you, that ye may learn wisdom" (Quran 6:151).

The Sufi philosopher Ibn Arabi considers al-Hakim ("The Wise") as one of the names of the Creator. Wisdom and truth, considered divine attributes, were concepts related and valued in the Islamic sciences and philosophy since their beginnings, and the first Arab philosopher, Al-Kindi says at the beginning of his book:

We must not be ashamed to admire the truth or to acquire it, from wherever it comes. Even if it should come from far-flung nations and foreign peoples, there is for the student of truth nothing more important than the truth, nor is the truth demeaned or diminished by the one who states or conveys it; no one is demeaned by the truth, rather all are ennobled by it.

— Al-Kindi, On First Philosophy

Chinese religion

The Buddhist term Prajñā was translated into Chinese as 智慧 (pinyin zhìhuì, characters 智 "knowledge" and 慧 "bright, intelligent").

According to the Doctrine of the Mean, Confucius said:

"Love of learning is akin to wisdom. To practice with vigor is akin to humanity. To know to be shameful is akin to courage (zhi, ren, yong.. three of Mengzi's sprouts of virtue)."

Compare this with the Confucian classic Great Learning, which begins with: "The Way of learning to be great consists in manifesting the clear character, loving the people, and abiding in the highest good." One can clearly see the correlation with the Roman virtue prudence, especially if one interprets "clear character" as "clear conscience". (From Chan's Sources of Chinese Philosophy).

In Taoism, wisdom is construed as adherence to the Three Treasures (Taoism): charity, simplicity, and humility. "He who knows other men is discerning [智]; he who knows himself is intelligent [明]." (知人者智，自知者明。Tao Te Ching 33)

Others

In Norse mythology, the god Odin is especially known for his wisdom, often acquired through various hardships and ordeals involving pain and self-sacrifice. In one instance he plucked out an eye and offered it to Mímir, guardian of the well of knowledge and wisdom, in return for a drink from the well. In another famous account, Odin hanged himself for nine nights from Yggdrasil, the World Tree that unites all the realms of existence, suffering from hunger and thirst and finally wounding himself with a spear until he gained the knowledge of runes for use in casting powerful magic. He was also able to acquire the mead of poetry from the giants, a drink of which could grant the power of a scholar or poet, for the benefit of gods and mortals alike.

In Baháʼí Faith scripture, "The essence of wisdom is the fear of God, the dread of His scourge and punishment, and the apprehension of His justice and decree." Wisdom is seen as a light, that casts away darkness, and "its dictates must be observed under all circumstances". One may obtain knowledge and wisdom through God, his Word, and his Divine Manifestation and the source of all learning is the knowledge of God.

In the Star Wars universe, wisdom is valued in the narrative of the films, in which George Lucas figured issues of spirituality and morals, recurrent in mythological and philosophical themes; one of his inspirations was Joseph Campbell's The Hero of a Thousand Faces. Master Yoda is generally considered a popular figure of wisdom, evoking the image of an "Oriental Monk", and he is frequently quoted, analogously to Chinese thinkers or Eastern sages in general. Psychologist D. W. Kreger's book "The Tao of Yoda" adapts the wisdom of the Tao Te Ching in relation to Yoda's thinking. Knowledge is canonically considered one of the pillars of the Jedi, which is also cited in the non-canon book The Jedi Path, and wisdom can serve as a tenet for Jediism. The Jedi Code also states: "Ignorance, yet knowledge." In a psychology populational study published by Grossmann and team in 2019, master Yoda is considered wiser than Spock, another fictional character (from the Star Trek series), due to his emodiversity trait, which was positively associated to wise reasoning in people: "Yoda embraces his emotions and aims to achieve a balance between them. Yoda is known to be emotionally expressive, to share a good joke with others, but also to recognize sorrow and his past mistakes".

Wisdom is learning how to understand, who to be and how to live.

Computer-aided design

From Wikipedia, the free encyclopedia

https://en.wikipedia.org/wiki/Computer-aided_design 

Example: 2D CAD drawing

 

Example: 3D CAD model

Computer-aided design (CAD) is the use of computers (or workstations) to aid in the creation, modification, analysis, or optimization of a design. CAD software is used to increase the productivity of the designer, improve the quality of design, improve communications through documentation, and to create a database for manufacturing. Designs made through CAD software are helpful in protecting products and inventions when used in patent applications. CAD output is often in the form of electronic files for print, machining, or other manufacturing operations. The term CADD (for computer aided design and drafting) is also used.

Its use in designing electronic systems is known as electronic design automation (EDA). In mechanical design it is known as mechanical design automation (MDA) or computer-aided drafting (CAD), which includes the process of creating a technical drawing with the use of computer software.

CAD software for mechanical design uses either vector-based graphics to depict the objects of traditional drafting, or may also produce raster graphics showing the overall appearance of designed objects. However, it involves more than just shapes. As in the manual drafting of technical and engineering drawings, the output of CAD must convey information, such as materials, processes, dimensions, and tolerances, according to application-specific conventions.

CAD may be used to design curves and figures in two-dimensional (2D) space; or curves, surfaces, and solids in three-dimensional (3D) space.

CAD is an important industrial art extensively used in many applications, including automotive, shipbuilding, and aerospace industries, industrial and architectural design, prosthetics, and many more. CAD is also widely used to produce computer animation for special effects in movies, advertising and technical manuals, often called DCC digital content creation. The modern ubiquity and power of computers means that even perfume bottles and shampoo dispensers are designed using techniques unheard of by engineers of the 1960s. Because of its enormous economic importance, CAD has been a major driving force for research in computational geometry, computer graphics (both hardware and software), and discrete differential geometry.

The design of geometric models for object shapes, in particular, is occasionally called computer-aided geometric design (CAGD).

Overview of CAD software

Starting around the mid-1960s, with the IBM Drafting System, computer-aided design systems began to provide more capability than just an ability to reproduce manual drafting with electronic drafting, the cost-benefit for companies to switch to CAD became apparent. The benefits of CAD systems over manual drafting are the capabilities one often takes for granted from computer systems today; automated generation of bills of materials, auto layout in integrated circuits, interference checking, and many others. Eventually, CAD provided the designer with the ability to perform engineering calculations. During this transition, calculations were still performed either by hand or by those individuals who could run computer programs. CAD was a revolutionary change in the engineering industry, where draftsmen, designers, and engineering roles begin to merge. It did not eliminate departments as much as it merged departments and empowered draftsmen, designers, and engineers. CAD is an example of the pervasive effect computers were beginning to have on the industry. Current computer-aided design software packages range from 2D vector-based drafting systems to 3D solid and surface modelers. Modern CAD packages can also frequently allow rotations in three dimensions, allowing viewing of a designed object from any desired angle, even from the inside looking out. Some CAD software is capable of dynamic mathematical modeling.

CAD technology is used in the design of tools and machinery and in the drafting and design of all types of buildings, from small residential types (houses) to the largest commercial and industrial structures (hospitals and factories).

CAD is mainly used for detailed engineering of 3D models or 2D drawings of physical components, but it is also used throughout the engineering process from conceptual design and layout of products, through strength and dynamic analysis of assemblies to definition of manufacturing methods of components. It can also be used to design objects such as jewelry, furniture, appliances, etc. Furthermore, many CAD applications now offer advanced rendering and animation capabilities so engineers can better visualize their product designs. 4D BIM is a type of virtual construction engineering simulation incorporating time or schedule-related information for project management.

CAD has become an especially important technology within the scope of computer-aided technologies, with benefits such as lower product development costs and a greatly shortened design cycle. CAD enables designers to layout and develop work on screen, print it out and save it for future editing, saving time on their drawings.

Uses

Computer-aided design is one of the many tools used by engineers and designers and is used in many ways depending on the profession of the user and the type of software in question.

CAD is one part of the whole digital product development (DPD) activity within the product lifecycle management (PLM) processes, and as such is used together with other tools, which are either integrated modules or stand-alone products, such as:

• Computer-aided engineering (CAE) and finite element analysis (FEA, FEM)
• Computer-aided manufacturing (CAM) including instructions to computer numerical control (CNC) machines
• Photorealistic rendering and motion simulation.
• Document management and revision control using product data management (PDM)

CAD is also used for the accurate creation of photo simulations that are often required in the preparation of environmental impact reports, in which computer-aided designs of intended buildings are superimposed into photographs of existing environments to represent what that locale will be like, where the proposed facilities are allowed to be built. Potential blockage of view corridors and shadow studies are also frequently analyzed through the use of CAD.

CAD has been proven to be useful to engineers as well. Using four properties which are history, features, parameterization, and high-level constraints. The construction history can be used to look back into the model's personal features and work on the single area rather than the whole model. Parameters and constraints can be used to determine the size, shape, and other properties of the different modeling elements. The features in the CAD system can be used for the variety of tools for measurement such as tensile strength, yield strength, electrical, or electromagnetic properties. Also its stress, strain, timing, or how the element gets affected in certain temperatures, etc.

Types

A simple procedure of recreating a solid model out of 2D sketches.

There are several different types of CAD, each requiring the operator to think differently about how to use them and design their virtual components in a different manner for each.

There are many producers of the lower-end 2D systems, including a number of free and open-source programs. These provide an approach to the drawing process without all the fuss over scale and placement on the drawing sheet that accompanied hand drafting since these can be adjusted as required during the creation of the final draft.

3D wireframe is basically an extension of 2D drafting (not often used today). Each line has to be manually inserted into the drawing. The final product has no mass properties associated with it and cannot have features directly added to it, such as holes. The operator approaches these in a similar fashion to the 2D systems, although many 3D systems allow using the wireframe model to make the final engineering drawing views.

3D "dumb" solids are created in a way analogous to manipulations of real-world objects (not often used today). Basic three-dimensional geometric forms (prisms, cylinders, spheres, and so on) have solid volumes added or subtracted from them as if assembling or cutting real-world objects. Two-dimensional projected views can easily be generated from the models. Basic 3D solids don't usually include tools to easily allow motion of components, set limits to their motion, or identify interference between components.

There are two types of 3D solid modeling

• Parametric modeling allows the operator to use what is referred to as "design intent". The objects and features created are modifiable. Any future modifications can be made by changing how the original part was created. If a feature was intended to be located from the center of the part, the operator should locate it from the center of the model. The feature could be located using any geometric object already available in the part, but this random placement would defeat the design intent. If the operator designs the part as it functions the parametric modeler is able to make changes to the part while maintaining geometric and functional relationships.
• Direct or explicit modeling provide the ability to edit geometry without a history tree. With direct modeling, once a sketch is used to create geometry the sketch is incorporated into the new geometry and the designer just modifies the geometry without needing the original sketch. As with parametric modeling, direct modeling has the ability to include relationships between selected geometry (e.g., tangency, concentricity).

Top-end systems offer the capabilities to incorporate more organic, aesthetic, and ergonomic features into designs. Freeform surface modeling is often combined with solids to allow the designer to create products that fit the human form and visual requirements as well as they interface with the machine.

Technology

A CAD model of a computer mouse

Originally software for CAD systems was developed with computer languages such as Fortran, ALGOL but with the advancement of object-oriented programming methods this has radically changed. Typical modern parametric feature-based modeler and freeform surface systems are built around a number of key C modules with their own APIs. A CAD system can be seen as built up from the interaction of a graphical user interface (GUI) with NURBS geometry or boundary representation (B-rep) data via a geometric modeling kernel. A geometry constraint engine may also be employed to manage the associative relationships between geometry, such as wireframe geometry in a sketch or components in an assembly.

Unexpected capabilities of these associative relationships have led to a new form of prototyping called digital prototyping. In contrast to physical prototypes, which entail manufacturing time in the design. That said, CAD models can be generated by a computer after the physical prototype has been scanned using an industrial CT scanning machine. Depending on the nature of the business, digital or physical prototypes can be initially chosen according to specific needs.

Today, CAD systems exist for all the major platforms (Windows, Linux, UNIX and Mac OS X); some packages support multiple platforms.

Currently, no special hardware is required for most CAD software. However, some CAD systems can do graphically and computationally intensive tasks, so a modern graphics card, high speed (and possibly multiple) CPUs and large amounts of RAM may be recommended.

The human-machine interface is generally via a computer mouse but can also be via a pen and digitizing graphics tablet. Manipulation of the view of the model on the screen is also sometimes done with the use of a Spacemouse/SpaceBall. Some systems also support stereoscopic glasses for viewing the 3D model. Technologies which in the past were limited to larger installations or specialist applications have become available to a wide group of users. These include the CAVE or HMDs and interactive devices like motion-sensing technology

Software

CAD software enables engineers and architects to design, inspect and manage engineering projects within an integrated graphical user interface (GUI) on a personal computer system. Most applications support solid modeling with boundary representation (B-Rep) and NURBS geometry, and enable the same to be published in a variety of formats. A geometric modeling kernel is a software component that provides solid modeling and surface modeling features to CAD applications.

Based on market statistics, commercial software from Autodesk, Dassault Systems, Siemens PLM Software, and PTC dominate the CAD industry. The following is a list of major CAD applications, grouped by usage statistics.