"Having these key figures present in one volume is sorely needed in the field, and this book provides...a one-volume reference work to fill the gap. As part of the Blackwell Companions to Philosophy series, I highly recommend this work." Reference Reviews "A very useful tool indeed both for specialists and amateurs! It brings together a remarkable bunch among the best scholars in the field from all over the world. The information is rich, precise, and up-to-date; yet the arrangement of the material is simple and handy." Claude Panaccio, Université du Québec à Trois-Rivières "An unparalleled source of information on the lives and thought of no fewer than 138 medieval Christian, Islamic, and Jewish philosophers. There are substantial essays here on the well-known heavyweights, such as Augustine, Averroes, Aquinas, Maimonides, and Ockham, but also useful accounts of the somewhat less well known, and the essential minimum on the various shadowy figures of the period, such as Berthold of Moosburg and William of Ware. This book is a ‘must-have’ for any serious student of medieval philosophy or theology." Gareth B. Matthews, University of Massachusetts, Amherst "This volume is a welcome addition to the currently available reference works on medieval philosophy. Its well-written historical articles and its concise and helpful entries on almost 140 medieval philosophers makes this book an indispensable scholarly tool for specialists and non-specialists alike." Eleonore Stump, St. Louis University "This is an impressive collection of work on a perennially underappreciated period of philosophical thought, and I will certainly be recommending it both to my students and to colleagues as a valuable resource in gaining familiarity with medieval thought, within and without the Latin West." - Christina Van Dyke, Calvin College