 Ross’s contributions to university administration and to public service were of no small importance. But it is for his work in philosophy that he is best known. He made contributions to ancient philosophy and to moral philosophy. In his lifetime, Ross was considered a major figure in the study of Aristotle (Wiggins 2004). He was the General Editor of the Oxford Aristotle translation series, first with J. A. Smith and then alone; to this series he contributed translations of Aristotle’s Metaphysics and his Nicomachean Ethics. Ross edited a number of Aristotle’s works in Greek for the Oxford Classical Texts series, including Rhetoric, Physics, De Anima, and Politics, and he produced editions of the Metaphysics, Physics, Parva Naturalia, Analytics and De Anima with long introductions and detailed commentaries. In addition, he produced two monographs, Aristotle and Plato’s Theory of Ideas. In moral philosophy, Ross’s most important contributions are expressed in his books The Right and the Good and Foundations of Ethics. To these he added a handful of journal articles, a critical commentary on Immanuel Kant’s Groundwork, Kant’s Ethical Theory, and a chapter on Aristotle’s ethics in Aristotle.