H. P. Blavatsky 
The Key to Theosophy – Being a Clear Exposition, in the Form of Question and Answer, of the Ethics, Science, and Philosophy for the Study of Which the Theosophical Society Has Been Founded [EPUB ebook] 

‘The Key to Theosophy’ is a detailed exposition of the ‘ethics, science, and philosophy’ of the Theosophical Society, written by one if its founding members, Helena Petrovna Blavatsky. Helena Petrovna Blavatsky (12 August 1831 – 8 May 1891) was a Russian spirit medium, occultist, and author. She co-founded the Theosophical Society in 1875 and gained international popularity for being the leading theoretician of Theosophy. This book will appeal to those with an interest in the Theosophical Society, and it is not to be missed by collectors of vintage occult literature. Contents include: ‘Theosophy and the Theosophical Society’, ‘The Meaning of the Name’, ‘The Policy of the Theosophical Society’, ‘The Wisdom-Religion Esoteric in all Ages’, ‘Theosophy is not Buddhism’, ‘Exoteric and Esoteric Theosophy’, ‘What the Modern Theosophy Society is not’, ‘Theosophists and the Members of the ‘T.S.”, etc. We are republishing this volume now in an affordable, modern, high-quality edition complete with a specially commissioned new biography of the author.