Abstract

On its twenty-fifth anniversary, Fides et ratio remains relevant for its bold defense of reason and the complementarity of faith and reason. It describes a philosophy that is not the preserve of academics but the duty of every person. It asserts that philosophy is never contained in one system but is always open to new questions and further insights. St. John Paul defends a philosophy that welcomes pluralism based on the richness of being but rejects a pluralism based on the impossibility of knowing the truth. Reflecting on Fides et ratio, this article describes six ways that theology uses philosophy and offers five lessons for philosophers, i.e., the universal character of philosophy, the complementarity of faith and reason, the necessity and limits of pluralism, the requirements for a philosophy to be consonant with theology, and the current reinvigoration of philosophy in seminaries.