HARVEY D. EGAN, S. J., D.Theol., is a leading expert on Christian mysticism and the thought of Karl Rahner. He is professor emeritus of systematic and mystical theology at Boston College, where he taught for thirty-five years. Fr. Egan received his doctorate of theology under the direction of Karl Rahner from Westfalische Wilhelms-Universitat in Munster, Germany, and he is the recipient of the Robert H. Goddard Distinguished Alumni Award from Worcester Polytechnic Institute, from which he graduated with a BS in electrical engineering. He has taught at Holy Cross College in Worcester, Loyola University Maryland, and earned the title of Bannon Distinguished Professor of Religious Studies at Santa Clara University, California. He has written several books, translated many writings by Karl Rahner, and is the author of numerous articles in scholarly journals and entries in anthologies and encyclopedias.