This book contains a collection of essays in honor of Aryeh Grabois, Professor of Medieval History at the University of Haifa. These essays are devoted to such medieval themes as interfaith relations, the Crusades, Jewish history and feudal monarchies, all areas in which A. Grabois has himself forged new directions in research. Among the contributors are David Abulafia, Elizabeth Brown, Franco Cardini, John Cowdrey, Ivonne Friedman, Jeannine Horowitz, Jacques Le Goff, Ilana Lourie, Jean Richard, Jonathan Riley-Smith, Kenneth Stow, and Avrom Saltman.