by Ken Wilber
Description
Publisher’s description:
A concise, comprehensive overview of Wilber’s revolutionary thought and its application in today’s world. In A Theory of Everything, Wilber uses clear, nontechnical language to present complex, cutting-edge theories that integrate the realms of body, mind, soul, and spirit. He then demonstrates how these theories and models can be applied to real-world problems in areas such as politics, medicine, business, education, and the environment. Wilber also discusses daily practises that readers take up in order to apply this integrative vision to their own everyday lives.
Author(s)

From the Integral Life website:
Often referred to as the “Einstein of consciousness studies”, Ken Wilber is a preeminent scholar of the Integral stage of human development. He is an internationally acknowledged leader, founder of Integral Institute, and co-founder of Integral Life.
Ken Wilber is one of the most important philosophers in the world today… with 25 books translated into some 30 foreign languages. …
Ken is the originator of the world’s first truly comprehensive or integrative philosophy, aptly named “Integral Theory.” As Wilber himself puts it: “I’d like to think of it as one of the first believable world philosophies” — something that is becoming increasingly necessary in order to navigate and thrive in today’s world.
An excellent primer explaining Integral Theory. The ideas have been extended since this was published, but it’s still a great place to start learning Integral Theory.