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In Buddhism, the term anattā (Pali) or anātman (Sanskrit) refers to the doctrine of "non-self", that there is no unchanging, permanent self, soul or essence in living beings. It is one of the seven beneficial perceptions in Buddhism, and along with dukkha (suffering) and anicca (impermanence), it is one of three Right Understandings about the three marks of existence.
 
The Buddhist concept of anattā or anātman is one of the fundamental differences between Buddhism and Hinduism, with the latter asserting that atman (self, soul) exists.

Etymology and nomenclature