Tertium Organum, written by P. D. Ouspensky, is a philosophical and metaphysical treatise that explores the nature of reality and consciousness. The title refers to a third organ of thought, beyond the traditional dichotomy of logic and intuition, which Ouspensky argues is necessary for understanding the deeper mysteries of existence. The book covers a wide range of topics, including the nature of time, space, and causality, the relationship between mind and matter, and the possibility of higher states of consciousness. Ouspensky draws on a variety of sources, including Eastern philosophy, mystical traditions, and modern science, to develop his ideas. The book is also intended as a key to understanding the enigmas of the world, providing insights into the nature of reality that can help us make sense of the mysteries of life. Overall, Tertium Organum is a challenging and thought-provoking work that invites readers to explore the deepest questions of human existence.1922. Translated fro