We present here in one book both volumes of this extraordinary work.Isis Unveiled is "a plea for the recognition of the Hermetic philosophy, the anciently universal Wisdom-Religion, as the only possible key to the Absolute in science and theology.", according to Madame Helena Blavatsky, the most important writer of the occult ever to live.Considered by all -critics and adepts alike- as a milestone in the history of Western Esotericism, ISIS UNVEILED gathers the themes central to the occult tradition—perennial philosophy, a Neo-Platonic emanationist cosmology, adepts, esoteric Christianity—and reinterprets them in relation to then very current developments in science and new knowledge of non-Western faiths. In doing so, it reflected many contemporary controversies—such as Darwin's theories on evolution and their impact on religion—and engaged in a discussion that appealed to intelligent individuals interested in religion but alienated from conventional Western forms.Blavatsky's combination of original insights, backed by scholarly and scientific sources, accomplished a major statement of modern occultism's defiance of materialist science.