Charles Tilly (PhD Harvard, 1958) taught at the University of Delaware, Harvard University, the University of Toronto, the University of Michigan, and the New School for Social Research before becoming Joseph L. Buttenwieser Professor of Social Science at Columbia University. A member of the National Academy of Sciences, the American Philosophical Society, and the American Academy of Arts and Sciences, he has published fifty books and monographs. His books from Cambridge University Press include Dynamics of Contention (with Doug McAdam and Sidney Tarrow, 2001), Silence and Voice in the Study of Contentious Politics (with Ronald Aminzade and others, 2001), The Politics of Collective Violence (2003), Contention and Democracy in Europe, 1650–2000 (2004), and Trust and Rule (2005).