The Heresy of the Free Spirit in the Later Middle Ages has been widely recognized as the standard work on the subject in any language. Robert E. Lerner examines

More than seventy documents, ranging in date from the early eleventh century to the early fourteenth century and representing both orthodox and heretical viewpo

Some of the most portentous events in medieval history—the Cathar crusade, the persecution and mass burnings of heretics, the papal inquisition—fall between

The study of heresy and heterodoxy and of belief in magic, witchcraft and the devil has in the past 25 years made significant advances in our understanding of a