Acknowledged as one of the most insightful and provocative teachers of our time, bestselling author David Deida continues to revolutionize the way that men and women grow spiritually and sexually. His ten books are published in more than twenty-five languages worldwide and are required reading in university, church, and spiritual center courses. His workshops on a radically practical spirituality have been hailed as among the most original and authentic contributions to the field of self-development currently available. He is a founding member of Integral Institute, and has taught and conducted research at the University of California-San Diego School of Medicine, University of California-Santa Cruz, San Jose State University, Lexington Institute in Boston, and Ecole Polytechnique in Paris, France. Some of his recent books include Blue Truth, The Enlightened Sex Manual, The Way of the Superior Man, and Instant Enlightenment.

Ken Wilber is one of the most influential and widely read American philosophers of our time. His writing has been translated into more than 20 languages. Ken Wilber is the author of many books, including The Spectrum of Consciousness; The Eye of Spirit; Grace and Grit; Sex, Ecology, Spirituality; A Brief History of Everything; Boomeritis; and The Marriage of Sense and Soul. Ken Wilber lives in Denver, Colorado.