Associate Professor of Philosophy
Official Student (i.e. Tutorial Fellow) of Christ Church


Research Interests
Ancient Philosophy.

I am currently working on a book for OUP on Aristotle’s Metaphysics, Book Lambda (XII), in which Aristotle discusses substance, form and matter, causation, teleology, theology, the nature of thought, physics and cosmology, and on articles on Aristotle, Physics I.5, and on Aristotle's scientific practice.

I am General Editor of the Clarendon Aristotle Series, and joint Editor, with Julia Annas, of Oxford Aristotle Studies.

Edited Anthologies
1991  Lindsay Judson (ed.), Aristotle’s Physics: A Collection of Essays (Oxford)
2006  Lindsay Judson and Vassilis Karasmanis (eds), Remembering Socrates: Philosophical Essays (Oxford)

1983  ‘Eternity and Necessity in De Caelo I.12’, Oxford Studies in Ancient Philosophy 1, 217-55
1987  ‘God or Nature?’, in Richard Sorabji (ed.), Philoponus and the Rejection of Aristotelian Science (London)
1987  ‘Russell on Memory’, Proceedings of the Aristotelian Society 88, 65-82
1988  ‘La Bataille Navale d’Aujourd’hui: De Interpretatione 9’, Revue de Philosophie Ancienne 6, 5-37
1991  ‘Chance and “Always or for the Most Part” in Aristotle’, in Aristotle’s Physics: A Collection of Essays
1994  ‘Heavenly Motion and the Unmoved Mover’, in Mary Louise Gill and James Lennox (eds), Self-Motion from Aristotle to Newton (Princeton)
1997  ‘Aristotle on Fair Exchange’, Oxford Studies in Ancient Philosophy 15, 147-75
1998  ‘What Can Happen When You Eat Pungent Food’, in Nikolaos Avgelis and Filimon Peonidis (eds), Aristotle on Logic, Language and Science (Thessaloniki)
2000  ‘Formlessness and the Priority of Form: Metaphysics Zeta 7-9 and Lambda 3’, in David Charles and Michael Frede (eds), Aristotle’s Metaphysics Lambda: Symposium Aristotelicum (Oxford)
2005  ‘Aristotelian Teleology’, Oxford Studies in Ancient Philosophy 29, 341-66
2009  ‘John Lloyd Ackrill’ (biographical memoir), Proceedings of the British Academy 161, 3-16
2010  ‘Carried Away in the Euthyphro’, in David Charles (ed.), Definition in Greek Philosophy (Oxford)  
2015  ‘Aristotle’s Astrophysics’, Oxford Studies in Ancient Philosophy 49, 151-92
2016  (forthcoming) Hypotheses in Platos Meno, Philosophical Inquiry
2016  (forthcoming) ‘Aristotle, Metaphysics Theta 8 1050b6-28’, Phronesis

Future projects include a book on Plato’s Euthyphro and articles on Aristotle’s conception of metaphysics and on his De Caelo.