Celia Chazelle has taught at The College of New Jersey since 1992. She is the author of "The Crucified God in the Carolingian Era: Theology and Art of Christ's Passion," and the co-editor, most recently, of "The Crisis of the Oikoumene: The Three Chapters and the Failed Quest for Unity in the Sixth-Century Mediterranean," Felice Lifshitz has taught at Florida International University since 1989. She is the author of "The Norman Conquest of Pious Neustria: Historiographic Discourse and Saintly Relics (684 - 1090)," and of "The Name of the Saint: The Martyrology of Jerome and Access to the S...