Crispin Wright (M.A., Ph.D., Cambridge; B.Phil., D.Litt., Oxford) specializes in the philosophies of language and mathematics, metaphysics and epistemology. In addition to his duties at NYU, he is Professor of Philosophical Research at the University of Stirling and Regius Professor of Logic Emeritus at the University of Aberdeen. He has taught at Columbia, Michigan, Princeton, St. Andrews, where he was the first Wardlaw University Professor and founded the research center, Arché, and Aberdeen where he held the Regius Chair of Logic and was Director of the Northern Institute of Philosophy. His books include Wittgenstein on the Foundations of Mathematics (Harvard 1980); Frege's Conception of Numbers as Objects (Humanities Press 1983); Truth and Objectivity (Harvard 1992); Realism Meaning and Truth (2nd. edition Blackwell 1993); The Reason's Proper Study (with Bob Hale, Oxford 2001), Rails to Infinity (Harvard 2001), Saving the Differences (Harvard 2003) and The Riddle of Vagueness (Oxford 2021). Two collections of his papers, Imploding the Demon, on Cartesian and Humean Skepticism, and The Measure of All Things, on Relativism, are currently in preparation for publication by Oxford University Press.