William Clare Roberts is assistant professor, department of Political Science, at McGill University.He studies the history of political thought: Marx and Marxism, ancient Greek political philosophy (especially Aristotle), classical political economy, Heidegger and his students. In contemporary ethical and political thought, he is interested in republicanism, moral particularism, institutionalism and non-ideal theory. He also studies social theory and philosophy of the social sciences, especially social ontology, institutional economics, prudential rationality.