The Key to Theosophy is a popular[citation needed] book by Helena Blavatsky first published in 1889 and still in print today, expounding the principles of theosophy in a readable question-and-answer manner. It covers Theosophy and the Theosophical...
The Secret Doctrine, the Synthesis of Science, Religion and Philosophy, a book originally published as two volumes in 1888, is Helena Blavatsky's magnum opus. The first volume is named Cosmogenesis, the second Anthropogenesis. It was an...