My special thanks to Eleonore Stump for her thoughtful, helpful correspondence; the remaining errors and misstatements are mine.

1 John Haldane, “Thomism and the Future of Catholic Philosophy”, Aquinas Lecture, Blackfriars, Oxford, February 1998; see also his “What future has Catholic philosophy?” Proceedings of the American Catholic Philosophy Association, vol. 72, 1998.

2 Ernest A. Moody, “Empiricism and metaphysics in medieval philosophy”, pp. 287–304 in his Studies in Medieval Philosophy, Science, and Logic. Berkeley: University of California Press, 1975. I have developed my own views a little further in “The World of Empiricism”, pp. 114–134 in Jan Hilgevoort (ed.) Physics and Our View of the World. Cambridge University Press, 1994.