Mary-Louise Gill is David Benedict Professor of Classics and Philosophy at Brown University, and works on ancient Greek philosophy, especially Plato’s later metaphysics and method and Aristotle’s natural philosophy and metaphysics. She received her M.A. and Ph.D. from the University of Cambridge, and previously taught at the University of Pittsburgh in Classics, Philosophy, and History & Philosophy of Science. She has held visiting positions at Dartmouth College, UCLA, UC Davis, Harvard, University of Paris-1, Panthéon-Sorbonne, and Peking University in Beijing; her fellowships include the Stanford Humanities Center, Institute for Advanced Study in Princeton, and Radcliffe Institute for Advanced Study at Harvard. She is the author of Aristotle on Substance: the Paradox of Unity (Princeton, 1989), of an Introduction and co-translation Plato: Parmenides (Hackett, 1996), and of Philosophos: Plato’s Missing Dialogue (Oxford, 2012); and she coedited Self-Motion: From Aristotle to Newton (Princeton, 1994), Unity, Identity and Explanation in Aristotle’s Metaphysics (Oxford, 1994), and Companion to Ancient Philosophy (Blackwell, 2006). She is currently working on various aspects of Aristotle’s hylomorphism, including his treatment of mind and thought in De Anima, and the culmination of his metaphysics in Metaphysics Lambda on the relation between human and divine substance.