Alexander of Hales, 39, 56 Alfarabi, Arabian philosopher, 59 Alfonso II, King of Aragon, his edict against heretics, 132, 157, 172, 217 Amaury de Bène, his heresies condemned, 49, 53, 63, 165, 225 Amaury of Rheims, Rector of University of Paris, 67 Ambrose, Saint, on Priscillianism, 128 Anjou, Charles of, 168-9 Annibaldi, Senator in Rome, 154 Anselm of Bec, 7-8, 57 Antinomianism, Catharan, 31 of Amaury de Bène, 49 Antisacerdotalism in mediæval heresy, 10, 12, 14, 16, 18, 20, 32-3, 53, 77, 80, 90, 136, 229-30, 234-5 Aphrodistias, Alexander of, 70 Apostolic Brethren, in Brittany, 15, 17 The followers of Segarelli, 47 Appeals from Inquisition, 226 Aquinas, St. Thomas, and Aristotelianism, 64 and Averrhoïsm, 64-5 and Realism, 91 on nature of heresy, 157-8, 183 otherwise mentioned, 39, 85, 223, 232 Aquitaine, Catharism in, 22 Spiritual Franciscans in, 43 Aragon, Inquisition in, 159, 172-3 Arc, Joan of, 109, 164, 241 Arianism, 125-6, 217 Aristotle and Arabian philosophy, 58-62, 232 and Scholasticism, 63, 66-7, 74 Arnaldo da Villanova, 41 Arnaud of Citeaux, Archbishop of Narbonne and papal legate, 137-8, 144, 146 Arnaud, Guillem, inquisitor, 159 Arnold of Brescia, 15, 18 Arnoldists, followers of Arnold of Brescia, 16, 230 Arras, witches of, 121, 203 Arzevedo, Diego de, Bishop of Osma, his work among Cathari, 137 Asceticism and profligacy, 3-5 Astrology, 108 Athanasius, Saint, on persecution, 126 Aubryot, _prévôt_ of Paris, 163 _Aucassin et Nicolette_, 5-7 Augustine, Saint, on persecution, 55, 96, 127 Augustinianism, in scholastic philosophy, 56, 66-7, 75, 232 _Auto-da-fé_, 163, 180, 223 Auxerre, Hugh, Bishop of, 133 Avempace, Arabian philosopher, 60 Averrhoës, or Ibn-Roschd, his career, 60 _n._ his philosophy, 58, 60-2 attitude to religion, 61-2 and _The Three Impostors_, 72 views of Gerson concerning, 72 views of Petrarch concerning, 71-2 Avicenna, Arabian philosopher, 59-60 Avignon, ‘Babylonish captivity’ of, 11, 71, 80, 86, 103 Bacon, Roger, 39, 53, 74, 107 Baghdad, Aristotelian philosophers in caliphate of, 59-60 Banishment, penalty for heresy, 217, 221 Basel, Council of, 12, 234 Beatific Vision, dogma of, 84-5, 233 Beghards or Beguines, 48, 50-1, 75, 165-6, 214 _Believers_, Catharan adherents, 29-31 Benedict XI, Pope, 162 Benedict XII, Pope, 175 Benedict XIV, Pope, 50-1 Berengar of Tours, 7, 57, 130, 140 _n._, 229 Bergamo, Dolcino’s crusade in, 47 Bernard de Caux, inquisitor in Languedoc, 148, 202, 215, 227 Bernard, Saint, and Abelard, 8, 57 and Henry of Lausanne, 17 otherwise mentioned, 3, 38, 85 Béziers, Spiritual Franciscans in, 43 fall of, in Albigensian Crusade, 138 Bishops, failure of their courts to deal with heresy, 141-5 their part in Inquisition, 182-3