John Matthews is John M. Schiff Professor of History and Classics at Yale University. He has written extensively on later Roman history, and he received the American Historical Association's James Henry Breasted Prize for The Journey of Theophanes: Travel, Business, and Daily Life in the Roman East. His other works include Western Aristocracies and Imperial Court, AD 364-425; Political Life and Culture in Late Roman Society; Laying Down the Law: A Study of the Theodosian Code.