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Bernard is a professor in the Divinity School in the University of Chicago. His research interests are: history of theology, especially in the Middle Ages; apocalyptic traditions in Christiantiy; history of mysticism and spirituality.
Donald is a professor in the Department of Near Eastern Languages and Civilizations at the University of Chicago. His research interests are: Islamic archaeology; urbanism and urbanization; interregional trade; Egypt, Iran, Syria and Jordan.