This book is the most complete statement of the ideas which P.D.Ouspensky taught. It gives a lucid explanation of the practical side of Gurdjieff’s teaching and shows how a Way of inner development can be followed in ordinary life. Gurdjieff gave his teaching in the form of raw material which it was Ouspensky’s specific task to put together into a systematic whole. When he came to London Ouspensky made it his work to transmit these ideas by means of lectures and talks.