Professor David Kaplan
Logic and the philosophy of language; the semantics and logic of propositional attitudes, indexicals, demonstratives, and expressives.
Professor Judith Thomson
Normative theory (concerning particularly what makes a normative judgment true, whether moral or non-moral) and metaphysics (concerning particularly the theory of action, part-hood, causality, and identity across time)
Professor Christine Korsgaard
Moral philosophy and its history; Kantian ethics; practical reason; the philosophy of action; personal identity; the ethics of our treatment of animals