R. I. Moore has been Professor of Medieval History at the University of Newcastle upon Tyne since 1993. He previously taught at Sheffield University, and as a Visiting Professor at the University of Chicago. His previous books include The Birth of Popular Heresy (1975), The Origins of European Dissent (1977) and The Formation of a Persecuting Society: Power and Deviance in Western Europe, 950-1250 (1987). He is also General Editor of the Blackwell History of the World series.