Bert Roest is Fr. Joseph Doino OFM Visiting Professor of Franciscan Studies, St. Bonaventure University (2003). He has published extensively on medieval historiography and intellectual history, including: A History of Franciscan Education (c. 1220-1517) (Brill, 2000).Stephen Gersh is Professor of Medieval Studies and Concurrent Professor of Philosophy at the University of Notre Dame. His books include: Kinesis Akinetos (Brill, 1973); From Iamblichus to Eriugena (Brill, 1978); Middle Platonism and Neoplatonism, The Latin Tradition, 2 Vols. (Notre Dame, 1986); Platonism in Late Antiquity (Notre Dame, 1992); Concord in Discourse (Berlin, 1996); Plato and the Platonici in the Middle Ages (Berlin, 2002).