Journal of the History of Philosophy, Editor 1998-2003

Journal of the History of Philosophy. Book Review Editor 1990-97

Editor, The Continuum Companion to Plato Continuum International Publishers, 2012. Corrected paperback edition, 2015 as The Bloomsbury Companion to Plato. Bloomsbury International Publishing, 2015

Editor, Who Speaks For Plato? Studies in Platonic Anonymity. Rowman & Littlefield, 2000.

Editor for Ancient Philosophy, Columbia History of Western Philosophy. Columbia University Press, 1994-96.

Editor, Plato’s Dialogues: New Studies and Interpretations (Rowman & Littlefield, 1993)