HPB's first major work, originally published in 1877. The most astounding compendium of occult facts and theories in Theosophical literature. It proclaims the existence of mystery schools under the guardianship of men who are servants for truth. It outlines a movement by the Guardians of the Ancient Wisdom to preserve and protect the ageless truths, until in later times they would again become known for the spiritual benefit of all.

Helena Petrovna Blavatsky (1831-1891), was born in Dnepropetrovsk (Ekaterinoslav), Ukraine, daughter of Colonel Peter Alexeyevich von Hahn and novelist Helena Andreyevna (née de Fadeyev). In 1849 she married N. V. Blavatsky, and shortly thereafter began more than 20 years of extensive travel, which brought her into contact with mystic traditions the world over.

She was the principal founder of the Theosophical Society in New York City in 1875, and devoted her extraordinary literary talents to its humanitarian and educational purposes until her death in London, England, on May 8, 1891. Along with writing her several books, H. P. Blavatsky kept up a voluminous correspondence and also contributed a steady stream of essays and articles to periodicals in English, French, and Russian.