Volume Four of
The Collected Works of Ken Wilber includes:
   • 
Integral Psychology, a concise version of Wilber's long-awaited textbook of transpersonal psychology, presenting one of the first truly integrative models of consciousness, psychology, and therapy.
   •  Charts correlating over one hundred developmental and evolutionary theories, ranging from ancient mystical traditions to modern theorists.
   •  Essays on human development, art, meditation, spirituality, yoga, women's studies, death and rebirth, science and mysticism, and transpersonal psychotherapies.
   •  Wilber's thoughtful replies to criticisms of his work.
Ken Wilber is the author of over twenty books. He is the founder of Integral Institute, a think-tank for studying integral theory and practice, with outreach through local and online communities such as Integral Education Network, Integral Training, and Integral Spiritual Center.
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