Within the province of the mind, What I believe to be true is true or becomes true, within the limits to be found experientially or experimentally. These limits are further beliefs to be transcended. This is the major thing to be said about all inner trips, by LSD, by meditation, by hypnosis, by Gestalt therapy, by encounter group work, by dreaming, by isolation-solitude-confinement. This is what this book is about.