The peculiar importance of this controversy lay in its effect on the status of the Church. If nominalism should prevail, then the Church would be shorn of much of its authority, for its greatest power lay in the conception of it as an enduring reality outside of and above all the individuals who shared in its work. It is not strange, then, that the ardent realism of William of Champeaux should have been outraged by the nominalistic logic of Abélard. Abélard, indeed, never went to such extreme lengths as the arch-nominalist, Roscellinus, who was duly condemned for heresy by the Council of Soissons in 1092, but he went quite far enough to win for himself the undying enmity of the leading realists, who were followed by the great majority of the clergy.
PORPHYRY
The Introduction ("Isagoge") to the Categories of Aristotle, Written by the Greek scholar and neoplatonist Porphyry in the third century A.D., was translated into Latin by Boetius, and in this form was extensively used throughout the Middle Ages as a compendium of Aristotelian logic. As a philosopher Porphyry was chiefly important as the immediate successor of Plotinus in the neoplatonic school at Rome, but his "Isagoge" had extraordinary weight among the medieval logicians.
PRISCIAN
The Institutiones grammaticae of Priscian (Priscianus Caesariensis) formed the standard grammatical and philological textbook of the Middle Ages, its importance being fairly indicated by the fact that today there exist about a thousand manuscript copies of it.
ANSELM
Anselm of Laon was born somewhere about 1040, and is said to have studied under the famous St. Anselm, later archbishop of Canterbury, at the monastery of Bec. About 1070 he began to teach in Paris, where he was notably successful. Subsequently he returned to Laon, where his school of theology and exegetics became the most famous one in Europe. His most important work, an interlinear gloss on the Scriptures, was regarded as authoritative throughout the later Middle Ages. He died in 1117. That he was something of a pedant is probable, but Abélard's picture of him is certainly very far from doing him justice.
ALBERIC OF RHEIMS AND LOTULPHE THE LOMBARD
Of these two not much is known beyond what Abélard himself tells us. ALberic, indeed, won a considerable reputation, and was highly recommended to Pope Honorius II by St. Bernard. In 1139 Alberic seems to have become archbishop of Bourges, dying two years later. Lotulphe the Lombard is referred to by another authority as Leutaldus Novariensis.