Christina Howells is Professor of French at the University of Oxford and a Fellow of Wadham College. She works on twentieth-century French literature and thought, Continental Philosophy and Literary Theory. Her publications include Sartre: The Necessity of Freedom (Cambridge University Press, 1988), and The Cambridge Companion to Sartre (Cambridge University Press, 1992); Derrida: Deconstruction from Phenomenology to Ethics (Polity Press, 1998); French Women Philosophers (Routledge, 2004); and Mortal Subjects: Passions of the Soul in Late Twentieth-Century French Thought (Polity, 2011). Gerald Moore is Lecturer in French in the School of Modern Languages and Cultures, Durham University. He is the author of Politics of the Gift: Exchanges in Poststructuralism (Edinburgh, 2011), as well as articles on recent French thought (Jacques Derrida, Jean-Luc Nancy, Bernard Stiegler), psychoanalysis and literature (Michel Houellebecq). He is currently preparing a monograph, Bernard Stiegler: Philosophy in the Age of Technology, for Polity.