In 1928, a 20-something Renaissance man named Manly Hall self-published a vast encyclopedia of the occult, believing that "modern" ideas of progress and materialism were displacing more important and ancient modes of knowledge. Hall's text has become a classic reference, dizzying in its breadth: various chapters explore Rosicrucianism, Kabbalah, alchemy, cryptology, Tarot, pyramids, the Zodiac, Pythagorean philosophy, Masonry and gemology, among other topics. This affordably priced edition would be vastly improved by a new foreword, placing the work in some kind of historical and critical context and introducing readers to the basic contours of Hall's sweeping corpus. Instead, we have a disciple's adulatory 1975 foreword, which merely parrots the same themes of mystery and esoterica that are espoused in the book.