Ken Wilber is the most widely translated academic writer in America, with 25 books translated into some 30 foreign languages, and is the first philosopher-psychologist to have his Collected Works published while still alive. Wilber is an internationally acknowledged leader and the preeminent scholar of the Integral stage of human development, which continues to gather momentum around the world. His many books, all of which are still in print, can be found at Amazon.com. Some of his more popular books include Integral Spirituality; No Boundary; Grace and Grit; Sex, Ecology, Spirituality; and the "everything" books: A Brief History of Everything (one of his largest selling books) and A Theory of Everything (probably the shortest introduction to his work). Ken Wilber is the founder of Integral Institute, Inc., the co-founder of Integral Life, Inc., and the Senior Fellow of Integral Life Spiritual Center. Of the numerous websites touching on his work, wilber.shambhala.com and integralinstitute.org are two of the most popular."Ken Wilber is one of the greatest philosophers of this century and arguably the greatest theoretical psychologist of all time."--Roger Walsh, M.D., Ph.D., author, Essential Spirituality"Ken Wilber is a national treasure."--Robert Kegan, Harvard Graduate School of Education, author, In Over Our Heads