First published in 2004. Routledge is an imprint of Taylor & Francis, an informa company.Antonio Negriis an independent scholar. He has taught political science at the University of Paris and at the University of Padua. He lives in Rome. AnneDufourmentelle, a philosopher and psychoanalyst, is a professor at the Ecole d'architecture La Villette in Paris. She has published Of Hospitality: AnneDufourmantelle Invites Jacques Derrida to Respond(Stanford, 2000). Malcolm DeBevoisehas translated books for Princeton and Harvard University Press.