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“Spinoza’s Vacuum Argument”, Midwest Studies in Philosophy 5 (1980), pp. 391-99.

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“Eight Questions About Spinoza”, in Y. Yovel (ed), Spinoza on Knowledge and the Human Mind, vol. 2 in the series “Spinoza by 2000. The Jerusalem Conferences” (Leiden: Brill, 1993), pp. 11-25.( PDF, 53kb)

“Descartes’s Theory of Modality”, Philosophical Review 103 (1994), pp. 639-667.

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“Mind and Brain the 17th Century”, Philosophic Exchange 24 (1995), pp. 81-92. ( PDF, 59kb)

“Spinoza’s Metaphysics”, in Don Garrett (ed), The Cambridge Companion to Spinoza (Cambridge University Press, 1996), pp. 61-88.

“Ideas and Qualities in Locke’s Essay”, History of Philosophy Quarterly 13 (1996), pp. 73-88.

“Space and Subtle Matter in Descartes’s Metaphysics”, in R. Gennaro and C. Heunemann (eds), New Essays on the Rationalists (Oxford University Press, 1999), pp. 3-25.

“Infallibility and Modal Knowledge in some Early Modern Philosophers”, in T. Smiley (ed), Mathematics and Necessity: Essays in the History of Philosophy (Oxford University Press, for the British Academy (Proceedings 103, 2000)), pp. 139-66.

“Leibniz’s Two Kingdoms”, in D. Rutherford and J. A. Cover (eds), Leibniz: Nature and Freedom (Oxford University Press, 2005), pp. 135-55. (festschrift for Robert Sleigh)

“God and Matter in Locke: an exposition of Essay IV.x”, in E. O'Neill and C. Mercer (eds), Early Modern Philosophy: Mind, Matter, and Metaphysics (Oxford University Press, 2005), pp. 161-182.( PDF, 114kb)