This still world is always present in the depths of the mind. It is the deepest, most universal layer of the unconscious. Wake up in this state, the Upanishads say, and you will be who you truly are, free from the conditioning of body and mind in a world unbounded by the limitations of time, space, and causality. Wake up in the very depths of the unconscious, when thought itself has ceased? The language makes no more sense than a map of some other dimension.