Ira Lapidus is Professor Emeritus of History at the University of California, Berkeley. Throughout his long and illustrious career he has published extensively. His abiding interest has been the relationship between the family, the tribe and the city, and this is exemplified in his current work and previous publications, including Contemporary Islamic Movements in Historical Perspective (1983), Muslim Cities in the Later Middle Ages (1984), Islam, Politics and Social Movements, co-edited with Edmund Burke (1988) and A History of Islamic Societies (1988, 2002).