Overview of Blavatsky's teachings
The three fundamental propositions expounded in The Secret Doctrine are
- that there is an omnipresent, eternal, boundless, and immutable reality of which spirit and matter are complementary aspects;
 - that there is a universal law of periodicity or evolution through cyclic change; and
 - that all souls are identical with the universal oversoul which is itself an aspect of the unknown reality.
 
Helena Blavatsky taught that Theosophy is neither revelation nor speculation.
 Blavatsky stated that Theosophy was an attempt at a gradual, faithful 
reintroduction of a hitherto hidden science called the occult science in
 Theosophical literature. According to Blavatsky occult science provides
 a description of reality not only at a physical level but also on a 
metaphysical one. Blavatsky said occult science had been preserved and 
practiced throughout history by carefully selected and trained 
individuals.
The Theosophical Society believes its precepts and doctrinal 
foundation will be verified when a Theosophist follows prescribed 
disciplines to develop metaphysical means of knowledge that transcend 
the limitations of the senses.
Definition and origin
Theosophy was considered by Blavatsky to be "the substratum and basis of all the world-religions and philosophies". In The Key to Theosophy, she stated the following about the meaning and origin of the term:
ENQUIRER. Theosophy and its doctrines are often referred to as a new-fangled religion. Is it a religion?
THEOSOPHIST. It is not. Theosophy is Divine Knowledge or Science.
ENQUIRER. What is the real meaning of the term?
THEOSOPHIST. "Divine Wisdom," (Theosophia) or Wisdom of the gods, as (theogonia), genealogy of the gods. The word theos means a god in Greek, one of the divine beings, certainly not "God" in the sense attached in our day to the term. Therefore, it is not "Wisdom of God", as translated by some, but Divine Wisdom such as that possessed by the gods. The term is many thousand years old.
ENQUIRER. What is the origin of the name?
THEOSOPHIST. It comes to us from the Alexandrian philosophers, called lovers of truth, Philaletheians, from phil "loving," and aletheia "truth". The name Theosophy dates from the third century of our era, and began with Ammonius Saccas and his disciples, who started the Eclectic Theosophical system.
According to her, all real lovers of divine wisdom and truth had, and have, a right to the name of Theosophist. Blavatsky discussed the major themes of Theosophy in several major works, including The Secret Doctrine, Isis Unveiled, The Key to Theosophy, and The Voice of the Silence. She also wrote over 200 articles in various theosophical magazines and periodicals.
 Contemporaries of Blavatsky, as well as later theosophists, contributed
 to the development of this school of theosophical thought, producing 
works that at times sought to elucidate the ideas she presented (see Gottfried de Purucker), and at times to expand upon them.
 Since its inception, and through doctrinal assimilation or divergence, 
Theosophy has also given rise to or influenced the development of other 
mystical, philosophical, and religious movements.
Theosophists attribute the origin of Theosophy to a universal 
striving for spiritual fulfilment, which they assert exists in all 
cultures and at all times. According to Theosophical texts, kindred 
practices and philosophies are found in an unbroken chain in India, but are also said to have existed in Ancient Greece and to be hinted in the writings of Plato (427–347 BCE), Plotinus (204–270), and other neo-Platonists.
Scope
Broadly, 
Theosophy attempts to reconcile humanity's scientific, philosophical, 
and religious disciplines and practices into a unified worldview.
 As it largely employs a synthesizing approach, it makes extensive use 
of the vocabulary and concepts of many philosophical and religious 
traditions. However these, along with all other fields of knowledge, are
 investigated, amended, and explained within an esoteric or occult framework.
In often elaborate exposition, Theosophy's all-encompassing worldview proposes explanations for the origin, workings and ultimate fate of the universe and humanity; it has therefore also been called a system of "absolutist metaphysics".
Methodology
According to Blavatsky, Theosophy is neither revelation nor speculation.
 It is portrayed as an attempt at gradual, faithful reintroduction of a 
hitherto hidden science, which is called in Theosophical literature The Occult Science.
 According to Blavatsky, this postulated science provides a description 
of Reality not only at a physical level, but also on a metaphysical one.
 The Occult Science is said to have been preserved (and practiced) 
throughout history by carefully selected and trained individuals. Theosophists further assert that Theosophy's precepts and their axiomatic
 foundation may be verified by following certain prescribed disciplines 
that develop in the practitioner metaphysical means of knowledge, which 
transcend the limitations of the senses.
It is commonly held by Theosophists that many of the basic Theosophical 
tenets may in the future be empirically and objectively verified by science, as it develops further.
Law of correspondences
In The Secret Doctrine,
 Blavatsky spoke of a basic item of cosmogony reflected in the ancient 
saying: "as above, so below". This item is used by many theosophists as a
 method of study and has been called "The Law of Correspondences". 
Briefly, the law of correspondences states that the microcosm is the 
miniature copy of the macrocosm and therefore what is found "below" can 
be found, often through analogy, "above".
Examples include the basic structures of microcosmic organisms mirroring
 the structure of macrocosmic organisms (see septenary systems, below). 
The lifespan of a human being can be seen to follow, by analogy, the 
same path as the seasons of the Earth, and in theosophy it is postulated
 that the same general process is equally applied to the lifespan of a 
planet, a solar system, a galaxy and to the universe itself. Through the
 Law of Correspondences, a theosophist seeks to discover the first 
principles underlying various phenomena by finding the shared essence or
 idea, and thus to move from particulars to principles.
Applications
Applied
 Theosophy was one of the main reasons for the foundation of the 
Theosophical Society in 1875; the practice of Theosophy was considered 
an integral part of its contemporary incarnation.
 Theosophical discipline includes the practice of study, meditation, and
 service, which are traditionally seen as necessary for a holistic 
development. Also, the acceptance and practical application of the 
Society's motto and of its three objectives are part of the Theosophical life.
Efforts at applying its tenets started early. Study and meditation are normally promoted in the activities of the Theosophical Society, and in 1908 an international charitable organization to promote service, the Theosophical Order of Service, was founded.
Terminology
Despite extensively using Sanskrit
 terminology in her works, many Theosophical concepts are expressed 
differently from in the original scriptures. To provide clarity on her 
intended meanings, Blavatsky's The Theosophical Glossary was published in 1892, one year after her death. According to its editor, George Robert Stowe Mead, Blavatsky wished to express her indebtedness to four works: the Sanskrit-Chinese Dictionary, the Hindu Classical Dictionary, Vishnu Purana, and The Royal Masonic Cyclopaedia.
Basic tenets
Three fundamental propositions
Blavatsky explained the essential component ideas of her cosmogony in her magnum opus, The Secret Doctrine. She began with three fundamental propositions, of which she said:
Before the reader proceeds … it is absolutely necessary that he should be made acquainted with the few fundamental conceptions which underlie and pervade the entire system of thought to which his attention is invited. These basic ideas are few in number, and on their clear apprehension depends the understanding of all that follows…
The first proposition is that there is one underlying, unconditioned,
 indivisible Truth, variously called "the Absolute", "the Unknown Root",
 "the One Reality", etc. It is causeless and timeless, and therefore 
unknowable and non-describable: "It is 'Be-ness' rather than Being".
 However, transient states of matter and consciousness are manifested in
 IT, in an unfolding gradation from the subtlest to the densest, the 
final of which is physical plane. According to this view, manifest existence is a "change of condition" and therefore neither the result of creation nor a random event.
Everything in the universe is informed by the potentialities 
present in the "Unknown Root," and manifest with different degrees of 
Life (or energy), Consciousness, and Matter.
The second proposition is "the absolute universality of that law 
of periodicity, of flux and reflux, ebb and flow". Accordingly, manifest
 existence is an eternally re-occurring event on a "boundless plane": "'the playground of numberless Universes incessantly manifesting and disappearing,'" each one "standing in the relation of an effect as regards its predecessor, and being a cause as regards its successor", doing so over vast but finite periods of time.
Related to the above is the third proposition: "The fundamental 
identity of all Souls with the Universal Over-Soul... and the obligatory
 pilgrimage for every Soul—a spark of the former—through the Cycle of 
Incarnation (or 'Necessity') in accordance with Cyclic and Karmic law, 
during the whole term."
The individual souls are seen as units of consciousness (Monads) that 
are intrinsic parts of a universal oversoul, just as different sparks 
are parts of a fire. These Monads undergo a process of evolution where 
consciousness unfolds and matter develops. This evolution is not random,
 but informed by intelligence and with a purpose. Evolution follows 
distinct paths in accord with certain immutable laws, aspects of which 
are perceivable on the physical level. One such law is the law of 
periodicity and cyclicity; another is the law of karma or cause and effect.
Esotericism and symbolism
In The Secret Doctrine, Blavatsky quoted Gerald Massey
 a "suggestive analogy between the Aryan or Brahmanical and the Egyptian
 esotericism" She said that the "seven rays of the Chaldean Heptakis or 
Iao, on the Gnostic stones" represent the seven large stars of the 
ancient Egyptian Great Bear constellation, the seven elemental powers, and the Hindu "seven Rishis".
 Blavatsky saw the seven rays of the Vedic sun deity Vishnu as 
representing the same concept as the "astral fluid or 'Light' of the 
Kabalists," and said that the seven emanations of the lower seven sephiroth are the "primeval seven rays", and "will be found and recognized in every religion."
Theosophy holds that the manifested universe is ordered by the number seven, a common claim among esoteric and mystical
 doctrines and religions. Thus, the evolutionary "pilgrimage" proceeds 
cyclically through seven stages, with the three first steps involving an
 apparent involution, the fourth one being one of equilibrium, and the 
last three involving a progressive development. 
There are seven symbols of particular importance to the Society's symbology:
- the seal of the Society
 - a serpent biting its tail
 - the gnostic cross (near the serpent's head)
 - the interlaced triangles
 - the cruxansata (in the centre)
 - the pin of the Society, composed of cruxansata and serpent entwined, forming together "T.S.", and
 - Om (or aum), the sacred syllable of the Vedas.
 
The seal of the Society contains all of these symbols, except aum, and thus contains, in symbolic form, the doctrines its members follow.
Septenary systems
In
 the Theosophical view all major facets of existence manifest following a
 seven-fold model: "Our philosophy teaches us that, as there are seven 
fundamental forces in nature, and seven planes of being, so there are 
seven states of consciousness in which man can live, think, remember and
 have his being."
Seven cosmic planes
The Cosmos does not consist only of the physical plane that can be perceived with the five senses, but there is a succession of
seven Cosmic planes of existence,
 composed of increasingly subtler forms of matter-energy, and in which 
states of consciousness other than the commonly known can manifest. Blavatsky
 described the planes according to these states of consciousness. In her
 system, for example, the plane of the material and concrete mind (lower
 mental plane) is classified as different from the plane of the 
spiritual and holistic mind (higher mental plane). Later Theosophists 
like Charles Webster Leadbeater and Annie Besant
 classified the seven planes according to the kind of subtle matter that
 compose them. Since both the higher and lower mental planes share the 
same type of subtle matter, they regard them as one single plane with 
two subdivisions. In this later view the seven cosmic planes include 
(from spiritual to material):
- Adi (the supreme, a divine plane not reached by human beings)
 - Anupadaka (the parentless, also a divine plane home of the divine spark in human beings, the Monad)
 - Atmic (the spiritual plane of Man's Higher Self)
 - Buddhic (the spiritual plane of intuition, love, and wisdom)
 - Mental (with a higher and lower subdivisions, this plane bridges the spiritual with the personal)
 - Emotional (a personal plane that ranges from lower desires to high emotions)
 - Physical plane (a personal plane which again has two subdivisions the dense one perceivable by our five senses, and an etheric one that is beyond these senses)
 
Seven principles and bodies
Just as the Cosmos is not limited to its physical dimension, human 
beings have also subtler dimensions and bodies. The "Septenary Nature of
 Man" was described by Blavatsky in, among other works, The Key to Theosophy;
 in descending order, it ranges from a postulated purely spiritual 
essence (called a "Ray of the Absolute") to the physical body.
The Theosophical teachings about the constitution of human beings
 talk about two different, but related, things: principles and bodies. 
Principles are the seven basic constituents of the universe, usually 
described by Mme. Blavatsky as follows:
- Physical
 - Astral (later called etheric)
 - Prana (or vital)
 - Kama (animal soul)
 - Manas (mind, or human soul)
 - Buddhi (spiritual soul)
 - Atma (Spirit or Self)
 
These Principles in Man may or may not form one or more bodies. 
Blavatsky's teachings about subtle bodies were few and not very 
systematic. In an article she described three subtle bodies:
- Linga Sharira – the Double or Astral body
 - Mayavi-rupa – the "Illusion-body"
 - Causal Body – the vehicle of the higher Mind
 
The Linga Sharira is the invisible double of the human body, elsewhere referred to as the etheric body or doppelgänger
 and serves as a model or matrix of the physical body, which conforms to
 the shape, appearance and condition of his "double". The linga sarira 
can be separated or projected a limited distance from the body. When 
separated from the body it can be wounded by sharp objects. When it 
returns to the physical frame, the wound will be reflected in the 
physical counterpart, a phenomenon called "repercussion." At death, it 
is discarded together with the physical body and eventually 
disintegrates or decomposes. This can be seen over the graves like a 
luminous figure of the man that was, during certain atmospheric 
conditions. 
The mayavi-rupa is dual in its functions, being:
"...the vehicle both of thought and of the animal passions and desires, 
drawing at one and the same time from the lowest terrestrial manas 
(mind) and Kama, the element of desire."
The higher part of this body, containing the spiritual elements 
gathered during life, merges after death entirely into the causal body; 
while the lower part, containing the animal elements, forms the 
Kama-rupa, the source of "spooks" or apparitions of the dead. 
Therefore, besides the dense physical body, the subtle bodies in a human being are:
- Etheric body (vehicle of prana)
 - Emotional or astral body (vehicle of desires and emotions)
 - Mental body (vehicle of the concrete or lower mind)
 - Causal body (vehicle of the abstract or higher mind)
 
These bodies go up to the higher mental plane. The two higher 
spiritual Principles of Buddhi and Atma do not form bodies proper but 
are something more like "sheaths".
Criticism
Blavatsky was influential on spiritualism and related subcultures: "The western esoteric tradition has no more important figure in modern times."
 She wrote prolifically, publishing thousands of pages and debate 
continues about her work. She taught about very abstract and 
metaphysical principles, but also sought to denounce and correct 
superstitions that, in her view, had grown in different esoteric 
religions. Some of these statements are controversial. For example, she 
quotes Anna Kingsford and Edward Maitland's book The Perfect Way.
 "It is 'Satan who is the God of our planet and the only God', and this 
without any metaphorical allusion to its wickedness and depravity," 
wrote Blavatsky, in The Secret Doctrine. "For he is one with the Logos."
 He is whom "every dogmatic religion, preeminently the Christian, points
 out as [...] the enemy of God, [... but is] in reality, the highest 
divine Spirit—Occult Wisdom on Earth. [...] Thus, the Latin Church [... 
and] the Protestant Church [... both] are fighting against divine Truth,
 when repudiating and slandering the Dragon of Esoteric Divine Wisdom. 
Whenever they anathematize the Gnostic Solar Chnouphis, the Agathodaemon Christos, or the Theosophical Serpent of Eternity, or even the Serpent of Genesis."
 In this reference Blavatsky explains that he whom the Christian dogma 
calls Lucifer was never the representative of the evil in ancient myths 
but, on the contrary, the light-bringer (which is the literal meaning of
 the name Lucifer). According to Blavatsky the church turned him into 
Satan (which means "the opponent") to misrepresent pre-Christian beliefs
 and fit him into the newly framed Christian dogmas. A similar view is 
also shared by some Christian Gnostics, ancient and modern.
Throughout much of Blavatsky's public life her work drew harsh 
criticism from some of the learned authorities of her day, as for 
example when she said that the atom was divisible.
Helena Blavatsky's skeptics
Max Müller,
 the renowned philologist and orientalist, was scathing in his criticism
 of Blavatsky's Esoteric Buddhism. Whilst he was willing to give her 
credit for good motives, at least at the beginning of her career, in his
 view she ceased to be truthful both to herself and to others with her 
later "hysterical writings and performances". Müller felt he had to 
speak out when he saw the Buddha being "lowered to the level of 
religious charlatans, or his teaching misrepresented as esoteric 
twaddle". There is a nothing esoteric or secretive in Buddhism, he 
wrote, in fact the very opposite. "Whatever was esoteric was ipso facto not Buddha's teaching; whatever was Buddha's teaching was ipso facto not esoteric".
 Blavatsky, it seemed to Müller, "was either deceived by others or 
carried away by her own imaginations" and that Buddha was "against the 
very idea of keeping anything secret".
Critics pronounced her claim of the existence of masters of 
wisdom to be utterly false, and accused her of being a charlatan, a 
false medium, evil, a spy for the Russians, a smoker of cannabis, a plagiarist, a spy for the English, a racist, and a falsifier of letters. Most of the accusations remain undocumented.
In The New York Times Edward Hower wrote, "Theosophical writers have defended her sources vehemently. Skeptics have painted her as a great fraud."
In the 1885 Hodgson Report to the Society for Psychical Research (SPR), Richard Hodgson concluded that Blavatsky was a fraud. However, in 1986, the SPR published a critique by handwriting expert Vernon Harrison,
 "which discredited crucial elements" of Hodgeson's case against 
Blavatsky, nevertheless, "Theosophists have overinterpreted this as 
complete vindication," wrote Johnson, "when in fact many questions 
raised by Hodgson remain unanswered."
René Guénon wrote a detailed critique of Theosophy entitled Theosophism: history of a pseudo-religion
 (1921), in which he claimed that Blavatsky had acquired all her 
knowledge from reading books, and not from any supernatural masters. 
Guenon pointed out that Blavatsky was a regular visitor to a library in 
New York, where she had easy access to the works of Jacob Boehme, Eliphas Levi, the Kabbala and other Hermetic treatises. Guenon also wrote that Blavatsky had borrowed passages from extracts of the Kanjur and Tanjur, translated by the eccentric orientalist Sándor Kőrösi Csoma, published in 1836 in the twentieth volume of the Asiatic Researchers of Calcutta.
K. Paul Johnson suggests in his book The Masters Revealed: Madam Blavatsky and Myth of the Great White Brotherhood
 that the Masters that Madam Blavatsky claimed she had personally met 
are idealizations of certain people she had met during her lifetime.
The article "Talking to the Dead and Other Amusements" by Paul Zweig New York Times October 5, 1980, maintains that Madame Blavatsky's revelations were fraudulent.
Robert Todd Carroll in his book The skeptic's dictionary
 (2003) wrote that Blavatsky used trickery into deceiving others into 
thinking she had paranormal powers. Carroll wrote that Blavatsky had 
faked a materialization of a teacup and saucer as well as writing the messages from her masters herself.
Blavatsky's Theosophy connected to antisemitism, racism
Jackson Spielvogel and David Redles of the Simon Wiesenthal Center's Museum of Tolerance analyze Blavatsky's racial ideas in her book Secret Doctrine.
 According to Spielvogel and Redles, Blavatsky labeled some races 
superior and others inferior. They clarify that Blavatsky did not 
advocate "domination of one race over another" and that she was against 
violence. They comment that Blavatsky's work "helped to foster 
antisemitism, which is perhaps one of the reasons her esoteric work was 
so rapidly accepted in German circles." They state Blavatsky "sharply 
differentiated Aryan and Jewish religion" and believed "The Aryans were 
the most spiritual people on earth." They quote Blavatsky's writing in Secret Doctrine
 as stating Aryans used religion as an "everlasting lodestar" in 
contrast to Judaism which Blavatsky claimed was based on "mere 
calculation" while characterizing it as a "religion of hate and malice 
toward everyone and everything outside itself."
The first aim of the Theosophical Society she founded is "To form
 a nucleus of the Universal Brotherhood of Humanity, without distinction
 of race, creed, sex, caste or colour", and her writings also include 
references emphasizing the unity of humanity: "all men have spiritually 
and physically the same origin" and that "mankind is essentially of one 
and the same essence".
 Cranston quoted Blavatsky saying that in reality there is no inferior 
or low-grade races because all of it are one common humankind.
Blavatsky had posited that humanity evolved through a series of stages called Root Races, the present, the Aryan, being the Fifth Root Race (of seven). The Root Races
 do not refer to ethnicities. They represent evolutionary stages the 
whole humanity is engaged in, each new Root Race being more advanced 
than the previous one. She taught that the earlier stage of evolution 
took place in Atlantis
 during the Fourth Root-Race. The Aryan Root Race was then only one more
 step in the evolutionary progression, to be eventually superseded by a 
more spiritual Root Race, the Sixth.
Regarding the concept of race as defined – in a comparatively more limited manner – by anthropology, sociology,
 and other disciplines, Blavatsky did not encourage superiority by any 
person or group, promoting the idea of the common origin and destiny of 
all humanity, and establishing the principle of universal brotherhood as
 the First Object of the Theosophical Society. She also proclaimed religious tolerance and inclusiveness stating, "Theosophists, collectively, respect the Bible as much as they do the sacred scriptures of other people, finding in it the same eternal truths as in the Vedas, the Zend-Avesta, the Tripitakas, etc." Conversely, Austrian/German ultra-nationalist Guido von List and his followers such as Lanz von Liebenfels, later selectively mixed parts of Blavatsky's occult philosophy with nationalistic and fascist ideas; this system of thought became known as Ariosophy.
 Some researchers, tracing the links between Ariosophy and Theosophy, 
stated that the latter relies mostly on "intellectual expositions of 
racial evolution".
However in The Key to Theosophy,
 Blavatsky had stated that "The Society is a philanthropic and 
scientific body for the propagation of the idea of brotherhood on practical instead of theoretical lines."