Her first great work, Isis Unveiled, was published in 1877; it was subtitled 'A Master Key to the Mysteries of Ancient and Modern Science and Theology'; but as 'the time was not ripe for the declaration of a great many truths', the readers were supplied with hints and sketches rather than 'methodical exposition'. It was a precursor to her more detailed work, The Secret Doctrine. These two books are considered her major works, although other valuable writings also issued from her pen.

H. P. BLAVATSKY (1831-91) was the greatest occultist of the West, and an outstanding world-figure of the nineteenth century. Scion of a Russian aristocratic family, from childhood she displayed remarkable psychic ability artistic and literary talents, and intellectual accomplishments. She left home early in life and wandered all over the world in search of occult knowledge (1849-74), meeting extraordinary adventures and spending a considerable time in the Himalayan regions, studying in monasteries. She was well prepared by her Teachers for her task: redeeming humanity from the enveloping darkness of materialism. Her great achievements are twofold: she co-founded the Theosophical Society in 1875, along with a distinguished American, Col. H. S. Olcott, and she produced, on a prodigious scale, spiritual and occult literature, earning for herself the name 'The Light Bringer'