A Brief History of Everything (1996) "Combining spiritual sensitivity with enormous intellectual understanding and a style of elegance and clarity, [this book] is a clarion call for seeing the world as a whole."— San Francisco Chronicle. The Eye of An Integral Vision for a World Gone Slightly Mad (1997) uses the spectrum model to create an integral approach to psychology, spirituality, anthropology, cultural studies, and art. "An Integral Theory of Consciousness," an essay previously unpublished in book form, presents one of the first theories to integrate first-, second-, and third-person accounts of consciousness.
Kenneth Earl Wilber II is an American philosopher and writer on transpersonal psychology and his own integral theory, a systematic philosophy which suggests the synthesis of all human knowledge and experience.