- Philosophical Uses of Categoricity Arguments, with Jouko Väänänen, Cambridge 2023.
- A Plea for Natural Philosophy and Other Essays, Oxford 2022.
- What Do Philosophers Do? Skepticism and the Practice of Philosophy, Oxford 2017.
- The Logical Must: Wittgenstein on Logic, Oxford 2014.
- Defending the Axioms, Oxford 2011.
- Second Philosophy, Oxford 2007.
- Naturalism in Mathematics, Oxford 1997.
- Realism in Mathematics, Oxford 1990.
- The Philosophy of Penelope Maddy, S. Arbeiter and J. Kennedy, eds., (a collection of essays with replies), Springer, to appear.
- ‘Wittgenstein on mathematics’, Philosophical Investigations 47 (2024), special issue on Wittgenstein’s philosophy of mathematics.
- ‘On multiversism’, to appear in S. Arbeiter and J. Kennedy, eds., The Philosophy of PM.
- ‘Strawson on naturalism and skepticism’, to appear in D. Pritchard et al, eds, Scepticism and Naturalism, Brill.
- ‘Varieties of naturalism in logic’, to appear in F. Ferrari et al, eds, Oxford Handbook of the Philosophy of Logic.
- ‘Wittgenstein’, forthcoming in A. Khani and G. Kemp, eds., Wittgenstein and Other Philosophers.
- ‘A reconstuction of Steel’s multiverse project’, Bulletin of Symbolic Logic 26 (2020), pp. 118-169.
- ‘A plea for natural philosophy’, in A Plea for Natural Philosophy and Other Essays.
- ‘On the question of realism’, in A Plea for Natural Philosophy and Other Essays.
- ‘Wittgenstein on hinges‘, in A Plea for Natural Philosophy and Other Essays.
- ‘Enhanced if-thenism‘, in A Plea for Natural Philosophy and Other Essays.
- APA Book Session on ‘What Do Philosophers Do? — Introductory overview and Replies to Coliva, Leite, and Stroud.
- ‘Reply to Ternullo on the multiverse‘, to appear in S. Centrone, D. Kant, and D. Sarikaya, eds., Reflections on the Foundations of Mathematics.
- ‘What do we want a foundation to do? Comparing set-theoretic, category-theoretic, and univalent approaches’, to appear in S. Centrone, D. Kant, and D. Sarikaya, eds., Reflections on the Foundations of Mathematics.
- ‘Psychology and the a priori sciences‘, in S. Bangu, ed., Naturalizing Logico-Mathematical Knowledge, 2018.
- ‘Set-theoretic foundations’, in Caicedo et al, eds., Foundations of Mathematics, 2017.
- ‘Mathematical depth’, Philosophia Mathematica, 2015.
- ‘A second philosophy of arithmetic‘, Review of Symbolic Logic, 2014.
- ‘A second philosophy of logic’, in P. Rush, ed., The Metaphysics of Logic, Cambridge University Press, 2014.
- ‘The philosophy of logic’, ASL retiring presidential address, Bulletin of Symbolic Logic, 2012.
- ‘Naturalism and common sense‘ (Hume and Reid), Analytic Philosophy, Volume 52, issue 1, March 2011, pp. 2-34.
- ‘Naturalism, transcendentalism and therapy‘, in J. Smith and P. Sullivan, eds., Transcendental Philosophy and Naturalism, Oxford University Press, 2011.
- ‘How applied mathematics became pure’, Review of Sybolic Logic, 2008.
- ‘Mathematical existence‘, Bulletin of Symbolic Logic, September 2005.
- ‘Second philosophy‘, Lakatos Award Lecture, published in Journal of Indian Council of Philosophical Research, July-September 2003
- ‘Three forms of naturalism‘, in S. Shapiro, ed., Oxford Handbook of Philosophy of Logic and Mathematics.
- ‘A naturalistic look at logic‘, Proceedings of the APA, November 2002.
- ‘Some naturalistic reflections on set theoretic method’, Topoi, 2001.
- ‘Naturalism: friends and foes’, in J. Tomberlin, ed., Philosophical Perspectives 15, Metaphysics 2001, Blackwell 2001.
- ‘Naturalism and the a priori’, in P. Boghossian and C. Peacocke, eds., New Essays on the A Priori,Oxford, 2000.
- ‘Logic and the discursive intellect’, Notre Dame Journal of Formal Logic, 1999.
- ‘Wittgenstein’s anti-philosophy of mathematics’, in J. Czermak and K. Paul, eds., Wittgenstein’s Philosophy of Mathematics, 1993.
- ‘Believing the axioms, Part I’ , and ‘Believing the axioms, Part II’ , Journal of Symbolic Logic, 1988. (For a copy with corrections, click here)
- ‘Proper classes‘, Journal of Symbolic Logic, 1983, and ‘A theory of sets and classes‘, in Sher and Tieszen, eds., Between Logic and Intuition: essays in honor of Charles Parsons, 2000.