Rachel Barney holds the Canada Research Chair in Classical Philosophy at the University of Toronto. She is the author of Names and Nature in Plato's Cratylus (2001).

Tad Brennan is Professor of Philosophy and Classics at Cornell University's Sage School of Philosophy. His books include Ethics and Epistemology in Sextus Empiricus (1999), The Stoic Life (2005) and Simplicius on Epictetus, Volumes 1 and 2 (2002), translated with Charles Brittain.

Charles Brittain is Professor of Classics and Philosophy at Cornell University. His books include Philo of Larissa: The Last of the Academic Sceptics (2001) and Cicero: On Academic Scepticism (2006).