Arcana Mundi: Magic and the Occult in the Greek and Roman Worlds by Georg Luck is a comprehensive sourcebook (130+ texts) translating ancient, primary sources on magic, witchcraft, astrology, and divination from the 8th century BCE to the 4th century CE. It reveals how ancient people practiced "darker" occultism. This volume is essential for understanding the "darker" aspects of Greek and Roman life that were often ignored in classical studies.