Isis Unveiled

A Master-Key to the Mysteries of Ancient and Modern Science and Theology

af H. P. Blavatsky

First published in 1877, this two-volume spiritualist text describes the philosophical and occultist aims of the Theosophical Society, which Helena Petrovna Blavatsky (1831-91) had recently helped to found. Drawing on her extensive travels, she claims to address the shortcomings of both scientific and theological inquiry.