"Ken Wilber is one of the most important pioneers in the field of consciousness in this century."—Deepak Chopra

"The most sensible, comprehensive book on consciousness since William James."—Dr. James Fadiman, President, Association for Transpersonal Psychology

"No Boundary does for this generation what Alan Watts' writings did for an earlier one. It brings the most difficult subject of all—nature of consciousness—into an easily grasped presentation that is both elegant and simple."—John White, editor of Kundalini, Evolution, and Enlightenment