

In Buddhism one of the ‘Three Characteristics’ is No-Self (the other two are impermanence and suffering which are closely associated with this). This refers to the illusion of reality having a permanent and separate self.
There is this notion that there is a permanent “I” or “me,” which is a separate entity that can be found. The obvious assumption of we are our body sounds good until we look at it and say “this is my body,” which implies at that moment that whatever owns the body wasn’t the body. The observer and the observed; duality denies our body being what we are. It is also in a state of impermanence, and at a sensate level it is made up of energy flickering at a similar rate to reality.