"This book is an important contribution to the study of ethics in medieval literary culture; more specifically, it is the only detailed study of medieval treatises on friendship and their relationship to medieval literature...it will be a useful guide to medieval definitions and representations of friendship."Ullrich Langer, Bryn Mawr Classical Review, 1995."...an inspiring help to grasp a very complex both historical, cultural, and philosophical problem...the priceless presentation of the material and indispensable description of texts…"Gerhard B. Winkler, INTAMS, 1997."There is much to be learned from this wide-ranging study…"David Marsh, Speculum - A Journal for Medieval Studies, 1996."Hyatte has traced a theme which interested both scholarly and popular writers throughout the ages and shows how it is constantly changing and yet harking back to what has gone before. This is a book for which many medievalists will be extremely grateful."Peter S. Noble, Medium Ævum.