Charles Barber is Donald Drew Egbert Professor of Art and Archaeology at Princeton University. Among his previous publications are Figure and Likeness: On the Limits of Representation in Byzantine Iconoclasm, Contesting the Logic of Painting: Art and Understanding in Eleventh-Century Byzantium, and, as coeditor with Stratis Papaioannou, Michael Psellos on Literature and Art: A Byzantine Perspective on Aesthetics.