Dr. Matthew Siebert 

Assistant Professor of Philosophy


  • B.A., University of Winnipeg
  • M.Phil., University of Oxford
  • Ph.D., University of Toronto
    • Introduction to Philosophy: Ancient & Medieval PH200W
    • Classic Texts of Political Philosophy: Ancient & Medieval PO211
    • Introduction to Logical Reasoning PH202
    • Philosophy of Science & Nature PH305
    • Faith & Reason (Philosophy of Religion) PH314
    • Philosophy of Knowing & Believing (Epistemology) PH315
    • Philosophy of Reality (Metaphysics) PH316
    • Political Economy EC356
    • Senior Seminar PH435
    • Philosophy of St. Augustine
    • Philosophy of St. Thomas Aquinas
  • “Aquinas on Testimonial Justification” The Review of Metaphysics, vol. 69, no. 3 (March 2016)
  • “Augustine’s Development on Testimonial Knowledge” Journal of the History of Philosophy, vol. 56 no. 2 (April 2018)
  • “Aquinas on Believing God”  Proceedings of the American Catholic Philosophy Association, vol. 89 (2016)
  • “Testimonial Trustworthiness: Truthfulness & Trust” American Catholic Philosophical Quarterly, vol. 92 no. 2 (Spring 2018)
  • “Faith in Science”, American Maritain Association annual meeting, Philadelphia, 1 March 2018
  • “Aquinas on Change”, American Philosophical Association, Eastern Division meeting, Baltimore, 7 Jan. 2017
  • “Testimony and the Aristotelian Virtue of Truthfulness”, Aristotelian Solutions to Contemporary Problems, Indiana University-Purdue University, Fort Wayne, 25 April 2015
  • “Plato on Courage:  Laches, Protagoras and Republic”, International Plato Society meeting, Ann Arbor, 5 October 2012
  • Commentary on “Existential Thomist Reflections on Kenny” by John F. X. Knasas, American Catholic Philosophical Association, Boston, 10 October 2015
  • Commentary on “Albert the Great and the Matter of Virtue” by David Zettel, 55th Congress, Canadian Philosophical Association meeting, Waterloo, 30 May 2012
  • Areas of Specialty: Medieval Philosophy, Epistemology
  • Areas of Competence: Ancient Philosophy, Early Modern Philosophy, Philosophical Theology, Ethics
  • Dissertation: Knowing and Trusting: the Medieval Social Epistemologies of Augustine and Aquinas