Antonio Negri has taught philosophy and political science at the Universities of Padua and Paris; he has also been a political prisoner in Italy and a political refugee in France. He is the author of over thirty books, including Political Descartes, Marx Beyond Marx, The Savage Anomaly, The Politics of Subversion, Insurgencies, Subversive Spinoza, and Time for Revolution, and, in collaboration with Michael Hardt, Labor of Dionysus, Empire and Multitude. He currently lives in Paris and Venice.

Timothy S. Murphy is associate professor of English at the University of Oklahoma. He is the translator of Antonio Negri's Subversive Spinoza and co-editor of Resistance in Practice: The Philosophy of Antonio Negri.