Philip Pettit is L. S. Rockefeller University Professor of Politics and Human Values at Princeton University, New Jersey and also Distinguished Professor of Philosophy at the Australian National University, Canberra. His books include The Common Mind, Republicanism, Rules, Reasons and Norms and Made with Words: Hobbbes on Language, Mind and Politics. Among his recent co-authored books are The Economy of Esteem, with Geoffrey Brennan; A Political Philosophy in Public Life, with Jose Marti; and Group Agency, with Christian List. A collection of papers on his work, Common Minds: Themes from the Philosophy of Philip Pettit, appeared in 2007.