ABSTRACT
Most of the time we find ourselves in the ordinary waking state of consciousness, although the experience differs from one person to another, and there are variations within the state itself. Reality has a particular appearance in the ordinary waking state of consciousness, and we usually take that appearance to be the only correct portrayal of reality, against which all other variations are judged. But a variety of alterations of consciousness occur, in which aspects of reality seem to be revealed that are quite different from everyday reality.
