Achille Mbembe is Research Professor in History and Politics at the Wits Institute for Social and Economic Research, University of the Witwatersrand, Johannesburg. He is coeditor of Johannesburg: The Elusive Metropolis , also published by Duke University Press, and the author of On the Postcolony as well as several books in French. Laurent Dubois is Marcello Lotti Professor of Romance Studies and History and Director of the Forum for Scholars and Publics at Duke University.