James T. Kloppenberg is Charles Warren Professor of American History at Harvard University. He is co-editor, with Richard Wightman Fox, of A Companion to American Thought (1995), and author of Uncertain Victory: Social Democracy and Progressivism in European and American Thought, 1870-1920 (Oxford University Press, 1986), which was awarded the Merle Curti Prize in intellectual history by the Organization of Americam Historians.