Larry Benson is Emeritus Professor of English at Harvard University, USA. The editor of the Riverside edition of Chaucer's works, he is also the author of Contradiction: From Beowulf to Chaucer; King Arthur's Death: The Middle English Alliterative; Morte Arthure and Stanzai Morte Arthur; Mallory's Morte D' Arthur; and The Learned and the Lewed: Studies in Chaucer and Medieval Literature. Daniel Donoghue is the John P. Marquand Professor of English, Harvard University, USA.