We have no right to believe that our ordinary level of consciousness is the highest form of consciousness, or the sole mode of experience possible to man. We cannot say that the range of the internal experience of oneself is necessarily limited either to dream-states or to ordinary consciousness. We have to consider the possibility, not only that there is a level above our ordinary level of consciousness, to which we are only occasionally awakened, but that our ordinary consciousness becomes integrated into a larger system when this happens.

Maurice Nicoll (1884 – 1953)