This book contains essays within a common theme by a group of distinguished historians (some of them acknowledged world leaders in their fields) in honour of the just-retired Regius Professor of Modern History at the University of Cambridge, whose contribution to religion, education and history has been recognised by the award of a knighthood and, more recently, by the Order of Merit. Their common interest is the same one that has marked Professor Chadwick"s life and work: the centrality of religious history to the history of Europe and, through that, to world history as a whole.