Brian P. Copenhaver is Distinguished Professor Emeritus of Philosophy and History at the University of California, Los Angeles, where he directed the Center for Medieval and Renaissance Studies. He is a member of the American Academy of Arts and Sciences, editor of History of Philosophy Quarterly, past president of the Journal of the History of Philosophy, and on the boards of Harvard’s I Tatti Renaissance Library and the Italian Istituto Nazionale di Studi sul Rinascimento. He has received fellowships from the Guggenheim and Getty foundations and has authored many books, including Hermetica, The Book of Magic, and Magic in Western Culture. Michael J. B. Allen is Distinguished Professor of English at the University of California, Los Angeles.