Originally published in 1860 as Histoire de la Magie, this English edition was translated by A. E. Waite in 1913. Long established as the most valuable source on the tradition of magic and occultism, History of Magic is now available as a Weiser classic in a new, enlarged edition. Described by Waite as "the most arresting, entertaining and brilliant of all studies on the subject, " the text provides a complete survey of the occult sciences, from Biblical references, and Zoroaster to Hermetic Magic, and the Kabbalah. The author also explores magical rites and dogmas from various civilizations and discusses some famous sorcerers and magicians. Other topics explored include Magic of the Magi, Magic in India, Mysticism, Magic and Christianity, and the sources of Freemasonry.

Eliphas Levi was steeped in the Western occult tradition and a master of the Rosicrucian interpretation of the Qabalah, which forms the basis of magic as practiced in the West today. The Key of the Mysteries represents the culmination of Levi's thoughts and is written with subtle and delicate irony. It reveals the mysteries of religion and the secrets of the Qabalah, providing a sketch of the prophetic theology of numbers. The mysteries of nature, such as spiritualism and fluidic phantoms, are explored. Magical mysteries, the Theory of the Will with its 22 axioms are divulged. And finally it offers "the great practical secrets." The true greatness of this work, however, lies in its ability to place occult thought firmly in Western religious traditions. For Levi, the study of the occult was the study of a divine science, the mathematics of God.

The Great Secret completes a trilogy of books by Eliphas Levi published in his "Studies in Hermetic Tradition" series, the two previous volumes being The Book of Splendours and The Mysteries of the Qabalah. Taken together these writings represent a fitting memorial to one who "has been both the keeper of the hermetic tradition and the absolute renovator of esoteric thinking in Europe in the 19th century".

"You will be as gods, knowing good and evil".

So concludes what Eliphas Levi considered to be his last testament, his most important and final treatise, and a summation of his esoteric philosophy. This volume is the conclusion of the work he started with Book One, The Hieratic Mystery or the Traditional Documents of High Initiation, published as The Book of Splendours (Weiser, 1984). The Great Secret contains his final two works: Book Two, The Royal Mystery or Art of Subduing the Powers, in which Levi discusses such topics as Evil, the Outer Darkness, the Great Secret, Magical Sacrifice, Evocations, the Arcana of Solomon's Ring, and the Terrible Secret. Book Three, The Sacerdotal Mystery or the Art of Being Served by Spirits, covers Aberrant Forces, the Chaining of the Devil, Sacred and Accursed Rites, Divination, Dark Intelligence, and the Great Arcanum.