This collection of translated documents, many of which have never before appeared in English, presents a survey of the vibrant, complex, stimulating, perilous world of magic, witchcraft, astrology, alchemy, and other related occult themes. It presents them not as disparate elements of folkloric belief and intellectual aberration, but as parts of a coherent, intellectually rigorous and scientifically challenging world-view and integral parts of everyone's intellectual, social and moral life in the early modern period.