Kenneth Earl Wilber II (born January 31, 1949) is an American theorist and writer on transpersonal psychology and his own integral theory, a four-quadrant grid which purports to … See more

Wilber was born in 1949 in Oklahoma City. In 1967 he enrolled as a pre-med student at Duke University. He became interested in psychology and Eastern spirituality. He left Duke and … See more

All Quadrants All Levels (AQAL, pron. "ah-qwul") is the basic framework of integral theory. It models human knowledge and experience with a four-quadrant grid, along the axes of "interior-exterior" and "individual-collective". According to Wilber, it is a … See more

Mysticism and the great chain of being
One of Wilber's main interests is in mapping what he calls the "neo-perennial philosophy", an integration of some of the views of mysticism typified by Aldous Huxley's The Perennial Philosophy with an account of cosmic See more

Wilber's views have been influenced by Madhyamaka Buddhism, particularly as articulated in the philosophy of Nagarjuna. Wilber has practiced various forms of Buddhist meditation, studying (however briefly) with a number of teachers, including See more

Wilber has been categorized by Wouter J. Hanegraaff as New Age due to his emphasis on a transpersonal view. Publishers Weekly has called him "the Hegel of Eastern spirituality".
Wilber is credited with broadening the appeal of a … See more

Books
• The Spectrum of Consciousness, 1977, anniv. ed. 1993: ISBN 0-8356-0695-3
• No Boundary: Eastern and Western Approaches to Personal Growth, 1979, reprint ed. 2001: ISBN 1 … See more