Helena Blavatsky or Madame Blavatsky (1831-1891) was a renowned psychic and spiritual leader. After travelling extensively throughout the world, she settled in the USA in 1873 where she founded the Theosophical Society with Olcott, Judge and others. In 1879 she travelled to India and then on to Europe finally settling in England where she died on 1891.
The Secret Doctrine assumes the dignity of a scripture, for in its pages eternal mysteries are clothed in ancient and modern terms, and to those who have eyes to see, the ageless wisdom is revealed. --Manly P. Hall, author of The Secret Teachings of All Ages