Dr. Matthew Siebert 

Assistant Professor of Philosophy


  • B.A., University of Winnipeg
  • M.Phil., University of Oxford
  • Ph.D., University of Toronto
  • Philosophy of Nature PH 220
  • Ancient & Medieval Philosophy PH 210
  • Epistemology PH 315
  • Philosophy of St. Thomas Aquinas
  • Metaphysics PH 316
  • Introduction to Philosophy   PH 105
  • Logic PH 101
  • Philosophy of St. Augustine
  • Senior Seminar: Pre-Exam  PH 435
  • “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 (forthcoming)
  •  “Aquinas on Believing God”  Proceedings of the American Catholic Philosophy Association, vol. 89 (2016)
  • “Testimonial Trustworthiness: Truthfulness & Trust” American Catholic Philosophical Quarterly (forthcoming)
  •  “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