Abstract
This paper takes up the question, “What is the responsibility of the philosopher, specifically the Catholic philosopher, in teaching ethics at a Catholic university?” Examination of the constitution Ex Corde Ecclesiae reveals that answering this question requires examining in turn the relationship between theology and philosophy. Accordingly, the paper proceeds to an analysis of the late Pope John Paul II’s encyclical, Fides et Ratio. Th is analysis shows, however, that the very distinction between theology and philosophy seems to become problematic on the encyclical’s terms. The paper thus goes on to indicate a different means of distinguishing these disciplines, and concludes by considering the significance of this distinction for the question of the responsibility of the Catholic philosopher.