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[German Version] (c. 560 – Apr 4, 636, Seville). From a Hispano-Roman family who migrated from Cartagena to Seville, Isidore succeeded his brother Leander as archbishop of Seville" in 599/601. He was an adviser to King Sisebut, founded episcopal schools with libraries in Seville, Toledo, and Saragossa and chaired the synods of Seville (619) and Toledo (633). In many of his works, he endeavored to communicate, especially to the clergy, comprehensive religious and secular learning nourished by antiquity. The Differentiae contain an alphab…

[German Version] ( Honorius Augustodunensis; 1080/1090 – c. 1150, Weih St. Peter). A Benedictine friar, Honorius of Autun was probably a disciple of Anselm of Canterbury. Around the year 1100, he wrote the Elucidarium…

[German Version] I. The first Council of Lyon was the renewed attempt of Pope Gregory IX to oppose Emperor Frederick Hohenstaufen after the emperor had forestalled a council convoked in Rome by Gregory in 1241. His successor …

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[German Version] I. Bishopric and Cathedral School – II. The Cathedral of Notre-Dame I. Bishopric and Cathedral School …

[German Version] (c. 1300–1359/1360). As teacher of the artes liberales , Buridan became rector of the University of Paris (II) in 1328 and 1340. Despite his nominalism imbued with Occamism (William of Occam), he partially distanced himself from radical Occamist doctrines, such as the doctrine …

[German Version] (c. 1050 Compiègne – 1120/1125) studied at Soissons and Reims; among the places he taught was Loches, where Abelard studied with him. His application of dialectics and semantics to theology made his teaching regarding the Trinity as a unity of the divine essence in three persons appear as tritheism, although his aim was to avoid Sabellianism and Arianism. He was forced to recant at a synod in Soissons (1090/1093). His critics, including Abelard in his Theologia summi boni, did not understand his concerns but objected that his writings did not use concepts …

[German Version] I. The Philosophical Problem The universals controversy concerns the nature of the general and its relationship to the particular (General/Particular). The fundamental ontological assumption that the world consists of objects with attributes is reflected in the subject-predicate structure of declarative sentences, based on the logical relationship of singular to general terms, elements to sets, individuals to general concepts. Can this logical and ontological dualism, governed by the …

[German Version] (c. 1000, Tours – Jan 6, 1088, St. Côme near Tours) studied with Fulbert in Chartres, and became the head and chancellor of the school of Tours, where he taught the Trivium ( Artes liberales ). He advised the count of Anjou and was archdeacon of Angers. His eucharistic doctrine, over which he became embroiled in a fierce dispute w…

[German Version] (1298/1299, Autrécourt – Jun 17, 1369, Metz). After studying law in Orleans (?) and theology in Paris, in 1335/1336 he received his first degree in theology and in 1339/1340 his licentiate. In 1340 he was appointed dean of the cathedral chapter of Metz. In 1340 Benedict XII summoned him to Avignon to stand trial for false teaching; in 1346 he was finally condemned by Pope Clement VI and had to recant. In his writings and correspondence (e.g. with the Franciscan Bernard of Arezzo),…

[German Version] (after 1250 – Aug 7, 1323, Narbonne). A Dominican friar who joined the order in Morlaix (1276), Hervaeus Natalis lectured in Paris from 1302 to 1309, was appointed Dominican provincial in 1309, and superior general in 1318. He defended Thomas Aquinas against Henry of Ghent, J. Duns Scotus, Peter Aureol, Jakob of Metz, and Durandus …

[German Version] (May 13, 1638, Dieppe – Apr 11, 1712, Dieppe), studied at the Oratorian …

[German Version] (de la Porrée, de Poitiers; c. 1080, Poitiers, France – Sep 4, 1154, Poitiers) studied with Hilary of Poitiers, Bernard of Chartres and Anselm of Laon. After canonries in Poitiers and Chartres, he taught in Paris and became bishop of Poitiers in 1142. In his commentaries on Boethius, Gilbert distinguished between speculative (physics, ethics, logic) and practical sciences (e.g. medicine). He divided physics into natural science, mathematics and theology. In order to understand the…

[German Version] This English translator and natural philosopher was a Benedict, who lived between 1070 and 1160 and was probably from Bath, to which he returned in 1130; he studied in Tours, probably taught in Laon, and undertook extensive journeys in the Mediterranean region, where he became acquainted with Arab science. His chief merit consists in his mediation of ancient and Arab natural philosophy of Antiquity to the West. He translated Euclid's Elements, the introduction to astrology by Abu Mashar, and the astronomical tables of al-…

[German Version] (1316, Helmstedt – Aug 8, 1390, Halberstadt), natural philosopher and logician. Albert studied at the University of Paris, where he became Master of Arts in 1351 and Rector in 1353. In 1362, he entered the service of Urban V; in 1365, he became the first rector of the University of Vienna and in 1366 bishop of Halberstadt. While in Paris, he wrote a commentary on the physical and logical works of Aristotle and a compendium of logic, Perutilis Logica, influenced by William of Occam, as well as the Sophismata. In natural philosophy and logic, his …

[German Version] (c. 1050 – Jul 15, 1117, Laon) was a student of Anselm of Canterbury in Bec, then canon and dean in Laon. From c. 1080, he and his brother Radulph led the cathedral school of Laon, which also included William of Champeaux. Under Anselm's leadership, the Glossa ordinaria, as they were later called, originated on the whole Bible based on statements by the Fathers and more recent theologians. The glosses on the Psalms, John and the letters of Paul…

[German Version] (1351, Compiègne - Aug 9, 1420, Avignon) studied in Paris, took the M.A. in 1368 and the Mag. theol. in 1381; in 1375, he became canon in Soissons, in 1381 in Noyon, later also in Meaux, Amiens, Cambrai, Compiègne, Rouen and Paris; he was rector of the Collège de Navarre from 1384 to 1389 and became father-confessor to Charles VI in 1389. From 1389 to 1395 he was chancellor of the university of Paris. In 1395, he became bishop of Le Puy, in 1397 of Noyon and Cambrai. He participated in the Council of Pisa. He became cardinal in 1411 and legate in Germany in 1413. He engaged vigorously in construction projects during his offices. Peter had good relations with his student and successor as rector of the university of Paris, J. Gerson. From 1414 to 1418 he attended the Council of Constance, where he participated in the proceedings against J. Hus and supported the deposition of John XXII, who had previously promoted him. He advocated the superiority of the council to the pope and conducted church reform to overcome the Western Schism. His theology was shaped es…

[German Version] (c. 1230, Patcham, Sussex – Dec 8, 1292, Mortlake, Surrey). After joining the Franciscans in 1250, Peckham studied in Paris and Oxford. From 1269 to 1271 he taught as magister regens in Paris, lecturing on the Sentences of Peter Lombard; from 1272 to 1275 he taught at Oxford, where he introduced the disputatio de quolibet (Disputation: II). He defended the Franciscan ideal of poverty (IV) against the Dominican R. Kilwardby. In 1275 he was made provincial of the Franciscan order in England; in 1276 he attended the general chapter in P…

[German Version] (“Doctor subtilis”; 1265/66 Duns?, Scotland – Nov 8, 1308, Cologne). There is great uncertainty on the biography of Duns Scotus. He came from Scotland, entered the Franciscan Order (Franciscans), and studied at Oxford and possibly Paris. He was ordained a priest in 1291. Whether he first taught at Cambridge is under dispute. Around 1300, he lectured ¶ at Oxford on the Sentences of Peter Lombard; likewise in Paris beginning in 1302. He was expelled from the country in 1303 for …

[German Version] (Amaury; born Bène, near Chartres, died 1206, Paris) studied and taught the artes liberales in Paris. He also was engaged in theology and developed a pantheistic Gnostic interpretation of history, inspired by Neoplatonism, based on John Scotus Eriugena and the natural philosophy of Aristotle. Our knowledge of his system depends entirely on works written by his opponents. His teachings were condemned in 1210 by a synod in Paris, along with the teachings of David, and in 1215 by the 4th Lateran Council. His followers were persecuted as heretics. Reinhold Rieger Bibliogra…