It is only because of ignorance that a man does not know the kingdom in himself. Why is he not conscious of it? Because he wishes to be able to hold something; only then does it exist for him. He does not wish to admit to himself the existence of sentiment: he says that it is of no account, there is nothing to it; and so of the dream, it is only imagination, it is nothing. But science and art spring from imagination, from the mind, not from a rock, not from the physical body. The source from which all knowledge comes is the mind, not an object. Mind means "I". It is the mind which identifies; the body is an illusion. When the mind is depressed, we say, "I am sad." Not the body, but the mind was depressed; so the real identification is with the mind, not the body.