What is anatta (not-self)?

Anatta is the Pali word for “not-self” (anātman in Sanskrit). It is the teaching that nothing in body or mind is a permanent, independent self. It is the third of the three marks of existence, with impermanence and dukkha.

The teaching on the five aggregates

According to tradition, one of the Buddha’s earliest teachings, given to his first five disciples, was on not-self. He looked at the five aggregates that make up a person: form, feeling, perception, mental formations and consciousness. He asked whether each one is permanent. It is not. He asked whether something impermanent can be a lasting source of happiness. It cannot. Then he asked whether it is right to regard such a thing as “this is mine, this I am, this is my self”. The disciples agreed that it is not.

The method is practical. Rather than arguing for or against a self in the abstract, the Buddha invited his listeners to look at each part of experience and see that none of it is a stable owner or controller.

What it does not mean

Anatta does not mean that a person does not exist, or that nothing matters. People still act, make choices and experience the results. The Buddha used ordinary words like “I” and “you” all the time. What the teaching rejects is the idea of an unchanging core hidden behind experience.

The Buddha also declined to say flatly “there is no self”, because he saw that this too could become a view to cling to. The emphasis is on letting go of identification, not on adopting a new theory.

Why it leads to peace

Much suffering comes from defending and feeding a sense of self: worrying about how we look, taking offence, wanting more for “me”. Seeing that this self is a changing process rather than a fixed thing loosens that grip. The texts describe the result as a deep peace and a natural care for others.

How traditions develop it

Theravada teachers usually present anatta through the five aggregates, as above. Mahayana traditions extend the idea in the teaching of emptiness: not only persons but all phenomena lack independent, fixed existence. In meditation, you can notice how thoughts, feelings and sensations arise by themselves, without anyone having to produce them.