Christopher Gill is Professor of Ancient Thought at the University of Exeter. His books include Personality in Greek Epic, Tragedy, and Philosophy: The Self in Dialogue (1996), which was awarded the Runciman prize in 1997; The Structured Self in Hellenistic and Roman Thought (2006); and a number of edited volumes of essays. He is currently working on Naturalistic Psychology in Galen and Stoicism (2010). Tim Whitmarsh is E. P. Warren Praelector in Classics at Corpus Christi and Lecturer in Greek Language and Literature at the University of Oxford. He has published widely on the Greek literature of the Roman period, including Greek Literature and the Roman Empire: The Politics of Imitation (2001) and The Second Sophistic (2005). He also edited Ordering Knowledge in the Roman Empire (with Jason Konig, 2007) and The Cambridge Companion to the Greek and Roman Novel (2008). John Wilkins is Professor of Greek Culture at the University of Exeter. Recent publications include The Boastful Chef (2000); Athenaeus and His World (edited with D. Braund, 2000); Food in the Ancient World (with Shaun Hill, 2006); and a number of articles and essays on food and medicine. He has also led a Wellcome Research Project on Galen's Simple Medicines.