 He has written and translated articles on Herodotus, Thucydides, Plato, Machiavelli, Montesquieu, Churchill, Charles Taylor, American religion, and humanitarian military intervention.His books are "The Humanity of Thucydides" (1994), and "The Legacy of Rousseau" (1997) edited with Nathan Tarcov.He projects a book on the role of compassion in modern political thought and practice, and a study of the "Book of Esther".