"I am particularly struck by the power of his argument against the major alternative view, that of Ken Wilber." -- Richard D. Mann, University of Michigan "I find it a psychologically more pertinent synthesis of the claims, experiences, and insights in the field of transpersonal development than Wilber's paradigm. It is neater, more parsimonious, and more powerful." --James N. Mosel, George Washington University "I would say that Washburn's book is more sensitive than Wilber's to the spiritual aspects of the psychological processes involved. Washburn brings original contributions not present in Wilber. This book is an important contribution.

" --Harold G. Coward, University of Calgary.