The knowledge of one's identity with the pure self, that negates the notion of the identity of the body and the self, sets a man free even against his will from the belief that he is a human being.
The world, which is full of attachment, aversion and the like, is like a dream. It appears to be real as long as one is ignorant. With the dawning of knowledge, the world becomes unreal.
The yogi endowed with complete enlightenment, sees through the eye of knowledge the entire universe in his own and regards everything as the Self and nothing else.