The great war on heresy obsessed medieval Europe in the centuries after the first millennium. This title focuses on the motives and anxieties of those who declared and conducted the war: what were the beliefs and practices they saw as heretical? How might such beliefs have arisen? And why were they [...]

Between 1000 and 1250, the Catholic Church confronted the threat of heresy with increasing force. Some of the most portentous events in medieval history-the Cathar crusade, the persecution and mass burnings of heretics, the papal inquisition established to identify and suppress beliefs that departed[...]

R.I. Moore traces the roots of dissent, the support which it commanded, and the reactions which it elicted from the holders of established power in the changing needs and conflicts of the expanding society of the eleventh and twelfth centuries: in spite of repression religious uniformity has never s[...]