2013 Reprint of 1931 Edition. Exact facsimile of the original edition, not reproduced with Optical Recognition Software. In this classic work, Ouspenky analyzes certain of the older schools of thought from the East and the West, connecting them with modern ideas and explaining them in light of the most recent discoveries and speculations in newer schools of philosophy and religion. In the course of his research he integrates the theories of relativity, the fourth dimension and current psychological theories. The book closes with a consideration of the sex problem from the perspective of sex in relation to the evolution of man toward superman.