The Thomistic Institute

Fr. Cassian Derbes explores why friendship is a difficult but essential good, drawing on Aquinas, Aristotle, Cicero, Augustine, and Dante to show how hope, fortitude, and magnanimity help us overcome sloth and despair in pursuit of true friendship as a common good.This lecture was given on January 18th, 2025, at Cedarbrake Catholic Retreat Center.For more information on upcoming events, visit us at thomisticinstitute.org/upcoming-events.About the Speaker:Fr. Cassian Derbes, O.P. is a priest of the Dominican Province of Saint Joseph. He is currently a visiting professor at the University of Notre Dame in the Mendoza College of Business. Father Cassian served recently as vice dean and professor of theology at the Pontifical University of Saint Thomas Aquinas (Angelicum) in Rome. His previous teaching positions include as adjunct professor of theology at the Pontifical College Josephinum in Ohio. Father Cassian earned his Doctorate in Sacred Theology (S.T.D.) from the Angelicum. He has a Licentiate in Sacred The