In this book, Ken Wilber, an internationally renowned and influential contemporary American thinker, provides a brief overview of the foundations of the revolutionary integral approach and the possibilities for its application in the modern world. The author discusses what a truly comprehensive “theory of everything” should be and outlines advanced modern concepts , with the help of which you can holistically integrate the spheres of body, mind and spirit. He goes on to show how all these theories and models can be applied to pressing problems of the world in such areas as business, education, politics, medicine and ecology. The book examines the crisis of modern culture and ways to resolve it, discusses the possibility of dialogue between science and religion and a model of the evolution of consciousness and society is described. Wilber also gives practical recommendations to the reader on the application of the integral approach. This publication is supplemented by an appendix with the author’s address to the Russian reader.