Aquinas on Efficient Causation and Causal Powers, Cambridge: Cambridge University Press, 2022.


“Aquinas on Passive Powers,” Vivarium, 59:1-2 (2021): 33-51.

“What is an action? Peter Auriol vs. Thomas Aquinas on the Metaphysics of Causality,Ergo, 6.43 (2020): 1259-1285.

“Aquinas on the intension and remission of accidental forms,” Oxford Studies in Medieval Philosophy, 7 (2019): 116-146.

Aquinas’s ontology of transeunt causal activity,” Vivarium, 56 (2018): 1-36.

Peter Olivi’s Rejection of God’s Concurrence with Secondary Causes,British Journal for the History of Philosophy, 22.4 (2014): 655-679.

Aquinas and Scotus on the Source of Contingency,Oxford Studies in Medieval Philosophy, vol. 2 (2015), vol. 2 (2014): 46-66.

Thomas Bradwardine on God and the Foundations of Modality,British Journal for the History of Philosophy, 21.2 (2012):368 – 380. [Awarded Society for Medieval and Renaissance Philosophy’s 2012 Founder’s Prize.]

Thomas Aquinas on the perpetual truth of essential propositions,History of Philosophy Quarterly, 27.3 (2010): 197-213.

John Duns Scotus on God’s Knowledge of Sins: A test case for God’s knowledge of contingents,Journal of the History of Philosophy, 48.1 (2010): 15-34.

Thomas Aquinas on Truths about Nonbeings,Proceedings of the American Catholic Philosophical Association, 80 (2007): 101-113.

Contributions to Edited Books:

“Essence in Medieval Philosophy,” Routledge Handbook of Essence, ed. K. Koslicki and M. Raven, in progress.

“Aquinas on the participation of substances in their accidents,” Festschrift for Msgr. John Wippel, ed. T.S. Cory and G. Doolan, (submitted to editors)

“Duns Scotus on How God Causes the Created Will’s Volitions,Interpreting Scotus, ed. Giorgio Pini, (Cambridge: Cambridge University Press, forthcoming)

“Medieval Aristotelians on Congenital Disability and their Early Modern Critics,Disability in Medieval Philosophy, ed. S. Williams (Routledge Press, 2020), 51-79.

“Propositions,” Bloomsbury Companion to Aquinas, eds. John Haldane and John O’Callaghan, submitted to editors.

“Truth,” Bloomsbury Companion to Aquinas, eds. John Haldane and John O’Callaghan, submitted to editors.