(Links below are to the official, published versions of my work. Electronic preprints of most of these works are available from PhilPapers.)


  1. Aquinas’s Ontology of the Material World: Change, Hylomorphism, and Material Objects (Oxford University Press, 2014).

Edited Books

  1. Reason and Faith: Themes from Richard Swinburne. Co-edited with Michael Bergmann. (Oxford University Press, 2016).
  2. The Cambridge Companion to Abelard. Co-edited with Kevin Guilfoy. (Cambridge University Press, 2004).

Edited Journal Issue

  1. Special issue of American Catholic Philosophical Quarterly (2007, vol. 81) on Peter Abelard, with “Editor’s Introduction”.

Journal Articles

  1. “Aquinas on the Individuation of Substances,” Oxford Studies in Medieval Philosophy, vol. 5 (forthcoming).
  2. Aquinas on the Problem of Universals,” Philosophy and Phenomenological Research (2016) 92: 715–735.
  3. Aristotelian Endurantism: A New Solution to the Problem of Temporary Intrinsics,” Mind (2011) 119: 883–905.
  4. Aquinas on Mental Representation: Concepts and Intentionality” (with Susan Brower-Toland), The Philosophical Review (2008) 117: 193–243.
  5. Making Sense of Divine Simplicity,” Faith and Philosophy (2008) 25: 3–30.
  6. A Theistic Argument Against Platonism (and in Support of Truthmakers and Divine Simplicity)” (with Michael Bergmann), Oxford Studies in Metaphysics (2006) 2: 357–86.
  7. Material Constitution and the Trinity” (with Michael Rea), Faith and Philosophy (2005) 22: 57–76.
  8. Aquinas’s Metaphysics of Modality: Reply to Leftow,” Modern Schoolman (2005) 83: 201–12.
  9. The Problem with Social Trinitarianism: Reply to Wierenga,” Faith and Philosophy (2004) 21: 295–303.
  10. Relations without Polyadic Properties: Albert the Great on the Nature and Ontological Status of Relations,” Archiv für Geschichte der Philosophie (2001) 83, 225–57.
  11. Medieval Theories of Relations,” Stanford Encyclopedia of Philosophy (Summer 2001 Edition), Edward N.
    Zalta (ed.).
  12. Abelard’s Theory of Relations: Reductionism and the Aristotelian Tradition,” The Review of Metaphysics (1998) 51: 605–31.

Book Chapters

  1. “Aristotelian vs. Contemporary Perspectives on Relations,” The Metaphysics of Relations, eds. Anna Marmodoro and David Yates (Oxford University Press, 2015), 36–54.
  2. “Matter, Form, and Individuation,” The Oxford Handbook of Aquinas, eds. Brian Davies and Eleonore Stump (Oxford University Press, 2011), 85–103.
  3. “Simplicity and Aseity,” The Oxford Handbook of Philosophical Theology, eds. Michael Rea and Thomas Flint (Oxford University Press, 2009), 105–28.
  4. “Anselm’s Ethics,” The Cambridge Companion to Anselm, eds. Brian Davies and Brian Leftow (Cambridge University Press, 2004), 222–56.
  5. “Abelard on the Trinity,” The Cambridge Companion to Abelard (Cambridge University Press, 2004), 223–57.
  6. “Editors’ Introduction” (with Kevin Guilfoy), The Cambridge Companion to Abelard (Cambridge University Press, 2004), 1–12.

Short Articles and Book Reviews

  1. “Matter,” The Cambridge Dictionary of Philosophy, ed. Robert Audi, 3rd ed. (Cambridge University Press, 2015), 638–9.
  2. Review of Thomas Williams (ed.), The Cambridge Companion to Duns Scotus (Cambridge University Press), The Philosophical Review (2006) 115: 259–62.
  3. Review of John Haldane (ed.), Mind, Metaphysics, and Value in the Thomistic and Analytical Traditions (University of Notre Dame Press), Notre Dame Philosophical Reviews (March 2003).
  4. Review of Richard Cross, Duns Scotus (Oxford University Press), Philosophia Christi (2001) 3: 310–11.
  5. Review of Paul Vincent Spade (ed.), The Cambridge Companion to Ockham (Cambridge University Press), Journal of the History of Philosophy (2000) 38: 588–9.
  6. Review of Simon Kemp, Cognitive Psychology in the Middle Ages (Greenwood Press), Speculum (2000) 75: 206–7.

Semi-Popular Articles

  1. The God of Eth and the God of Earth” (with Michael Bergmann), Think: Philosophy for Everyone (2007) 14:33–8.
  2. Understanding the Trinity” (with Michael Rea), Logos: A Journal of Catholic Thought and Culture (2004) 8: 145–57.