First published in 1932, The Tree of Life is widely regarded as Israel Regardie's magnum opus and one of the most influential works on Western occultism. In this landmark study, Regardie presents magic as a disciplined spiritual practice rooted in the Hermetic Qabalah and the broader tradition of mysticism. With clarity and insight, he explores the philosophical foundations of magic alongside its practical techniques, from ritual tools and divine names to evocation, skrying, and astral exploration.