If we watch closely we shall find that in the twenty-four hours there is a time when we were absent, we did not know where we were or what we were. In this is the whole mystery of being, though it seems very simple. This is the state in which the Consciousness is unconscious of all save of its own existence. In the Hindu scriptures this state of consciousness is called Mukti, freedom. It is a very high state. In Islam it is called Najat, liberation. The mystics experience this state consciously; the ordinary person experiences it in deep sleep, when he does not know where he is or what he is.