"The Fourth Book of Occult Philosophy" by Cornelius Agrippa is considered one of the foundation stones of Western magic. The grimoires it contains are among the most important that exist in the Western tradition. For more than three hundred years, this mysterious grimoire has been regarded as difficult or even impossible to understand-until now. Occult scholar Donald Tyson presents a fully annotated, corrected, and modernized edition of this masterwork that renders it fully accessible to the average reader as well as scholars and skilled magicians. For the first time, these classic works of Western magic are unveiled to everyone seeking to understand them.