Gareth Stedman Jones is Professor of Political Thought and Director of the Centre for History and Economics at the University of Cambridge. He is the Cambridge Faculty Director of the Ariane de Rothschild Fellows Program and a Member of the Conseil Scientifique of the CNRS. Professor Stedman Jones has published numerous books and articles, including Outcast London (1971), Languages of Class (1983) and An End to Poverty? (2005), and wrote the introduction to The Communist Manifesto (2003). He is currently working on an intellectual biography of Marx. Gregory Claeys is Professor of the History of Political Thought at Royal Holloway, University of London. He has edited numerous works including Modern British Utopias. c.1700–1850 (8 volumes, 1997), Restoration and Augustan British Utopias (2000), Late Victorian Utopias (6 volumes, 2008), and The Cambridge Companion to Utopian Literature (2010). Claeys has written several studies of aspects of the Owenite socialist movement, of the French Revolution debate in Britain, and of Thomas Paine's thought.