“In this fascinating new book, Alain Boureau dissolves the mystery surrounding the sudden appearance of witch hunts in the early fifteenth century. The early modern concept of the witch was made possible more than a century earlier as medieval demonology coalesced into an autonomous ‘science.’ Around 1300 Scholastic theologians and papal consultants developed sacramental conceptions of the pact, Satan’s relations with heretics, and the nature of magical assaults that bore tragic consequences until nearly 1700. Boureau’s careful analyses of circumstances and arguments will make Satan the Heretic a classic in the intellectual history of witchcraft.”
— Walter Stephens, author of Demon Lovers
“Satan the Heretic is an important contribution to the field of medieval demonology. Boureau contends that, contrary to common belief, medieval culture experienced a ‘peaceful’ coexistence with demons, and that modern witchcraze emerged as a sudden and unexpected theological turn between 1280 and 1330. Boureau’s belief in an ‘early’ origin of Western obsession with demons and witches entails a far-reaching revision of this complex and fascinating phenomenon.”
— Armando Maggi, author of In the Company of Demons
"An excellent account of the swift development of Scholastic demonology during the thirteenth century."
— Alastair Sooke, Times Literary Supplement
"This is a valuable addition to the history of medieval demonology and magic."
— Sophie Page, Catholic Historical Review
"Essential reading for anyone who wants to understand the developing perceptions of demonology in the Medieval West."
— Jacques Theron, Studia Historiae Ecclesiasticae
"A subtle analysis of a shift in ideas that would, eventually, lead to the severest and most corporeal ramifications. . . . Its readers must grapple not only with the persuasiveness of Boureau's thesis, but also with the vitality of finely assembled intellectual history."
— Christine Caldwell Ames, H-France Review