Originally published in 1908, The Kybalion is a study of the Hermetic philosophy of ancient Egypt and Greece. It explores the principles and ideas attributed to Hermes Trismegistus and was written anonymously by one or more persons identifying themselves only as the "Three Initiates." This books includes a chapter for each of the 7 principles of Hermeticism. The chapter headings are as follows: Hermetic Philosophy, Seven Hermetic Principles, Mental Transmutation, The All, The Mental Universe, Divine Paradox, "The All" in All, Planes of Correspondence, Vibration, Polarity, Rhythm, Causation, Gender, Mental Gender, and Hermetic Axioms.