Four in-depth lectures on the essence of the Fourth Way ideas, their practical application for psychological and spiritual development, and their relationship to Christianity. An extensive glossary is also included. The Fourth Way was developed by G.I. Gurdjieff, P.D. Ouspensky, and Maurice Nicoll. The author presents the history, cosmology, practices, and connections between these esoteric teachings and the spiritual wisdom of mystical Christianity. Charts depicting levels of consciousness and fundamental laws of the universe related to the evolution of human consciousness are also included.