Bernard McGinn, Naomi Shenstone Donnelley Professor of Historical Theology and of the History of Christianity at the University of Chicago, lectured in Sanders Auditorium on "Apocalypticism and Mysticism."  A preeminent scholar of mysticism in Western Christian thought, Professor McGinn published Visions of the End: Apocalyptic Traditions in the Middle Ages in 1979, and he was co-editor of The Encyclopedia of Apocalypticism (1999).  His The Flowering of Mysticism: Men and Women in the New Mysticism, 1200-1350, the third of a projected five-volume study of Christian mysticism in the West, appeared in 1990.