This Norton Critical Edition of Chaucer's masterpiece is based on Stephen Barney's text and is accompanied by a translation of its major source, Boccaccio's "Il Filostrato". The editor's introduction, marginal glosses and explanatory annotations make it easily accessible to students with no knowledge of Chaucer or Middle English. Also included is Robert Henryson's "Testament of Cresseid". Ten essays by distinguished Chaucerians illuminate the major scholarly issues raised by this complex and challenging poem. A glossary and selected bibliography are also included.