Collected Works of Ken Wilber, Volume 4

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.