Jenny Bryan is Lecturer in Classical Philosophy in the Department of Classics and Ancient History at the University of Manchester. She is the author of Likeness and Likelihood in the Presocratics and Plato (Cambridge, 2011). Robert Wardy is a Reader in Ancient Philosophy at the University of Cambridge and a Fellow of St Catharine's College. He is the author of The Chain of Change: A Study of Aristotle's Physics VII (Cambridge, 1990), The Birth of Rhetoric: Gorgias, Plato and their Successors (1998), Aristotle in China: Language, Categories and Translation (Cambridge, 2000), and Doing Greek Philosophy (2005). James Warren is Professor of Ancient Philosophy at the University of Cambridge and a Fellow of Corpus Christi College. He is the author of Epicurus and Democritean Ethics: An Archaeology of Ataraxia (Cambridge, 2002), Facing Death: Epicurus and His Critics (2004), Presocratics (2007) and The Pleasures of Reason in Plato, Aristotle, and the Hellenistic Hedonists (Cambridge, 2014) alongside articles on a range of topics in ancient philosophy, including on various topics in Epicureanism and ancient scepticism. He is the editor of The Cambridge Companion to Epicureanism (Cambridge, 2009) and, with Frisbee Sheffield: The Routledge Companion to Ancient Philosophy (2013).