Academic Interests: Philosophy of logic; philosophy of language; metaphysics; Frege; contemporary analytic philosophy; modality; descriptions and direct reference; Russell and Wittgenstein.

Recent Publications:

• "Gottlob Frege and the Grammar of Truth," to appear in Philosophy and Grammar in Early Twentieth-Century Thought, ed. Richard Gaskin, Routledge
• "Frege's Treatment of Indirect Reference," Frege: Importance and Legacy, ed. M. Schirn (de Gruyter, 1996)
• "Diary: Written by Professor Gottlob Frege in the Time From 10 March to 9 May, 1924," Translation, Inquiry 39 (1996)
• First-Order Modal Logic, with Melvin Fitting (Kluwer)