This seminal 1970s introduction to modern magickal theory and practice was revised for the 21st century and remains among the finest and most influential guides to the subject.

Magical thought is described and contrasted with Science, Art and Religion. The dynamic relationship between them is explained. Modern magic and its role in the 21st century is outlined with respect to practices ranging from ritual magic, through alchemy to New Age therapies.

Specific topics include: secrecy, initiation, sacrifice, cyber-animism, Crowleyanity, morality, pseudo-science, demonology, deity, miracles and divination.