An organization founded in New York in 1875 by the Russian mystic Helena Petrovna Blavatsky (1831-91) and Henry Steel Olcott (1832-1907), an American psychic investigator who became its first president. Through the study of comparative religion the Society sought to uncover the truths which it believed to constitute the core of all religions. Its main beliefs, which include many Indian doctrines such as karma, reincarnation, and belief in astral bodies, are explained in Blavatsky's books Isis Unveiled (1877) and The Secret Doctrine (188

. Other influential figures include Annie Besant and C. W. Leadbetter. Leading members of the society visited India and other parts of Asia to study mystical teachings and seek out occult phenomena. Although Buddhist ideas are represented to some degree, the primary Indian influence on theosophy came from Hinduism.