WHAT THEOSOPHY IS "There is a school of philosophy still in existence of which modern culture has lost sight." In these words Mr. A.P. Sinnett began his book, The Occult World, the first popular exposition of Theosophy, published thirty years ago. [Namely in 1881.] During the years that have passed since then, many thousands have learned wisdom in that school, yet to the majority its teachings are still unknown, and they can give only the vaguest of replies to the query, "What is Theosophy?" Two books already exist which answer that question: Mr. Sinnett's Esoteric Buddhism and Dr. Besant's The Ancient Wisdom. I have no thought of entering into competition with those standard works; what I desire is to present a statement, as clear and simple as I can make it, which may be regarded as introductory to them.