¹ Thanks are owed to the sponsors of this conference: the University of Notre Dame's John J. and Kathleen McMackin Endowment for Excellence in Political Science and Theory, Raymond and Celeste Biagini Endowment for Excellence in Political Theory in honor of Gerhart Niemeyer, Institute for Scholarship in the Liberal Arts, College of Arts and Letters, Department of Political Science, Political Theory Field, Department of Philosophy, Notre Dame Institute for Advanced Study, Notre Dame Center for Ethics and Culture, Notre Dame Workshop on Ancient Philosophy, Nanovic Institute for European Studies, Dr. William M. Scholl Chair in International Affairs, the Review of Politics, Cambridge University Press, and the University of Chicago Press. Without the generous support of each sponsor, this conference and special edition of the Review of Politics would not have been possible.