To understand our faith -- to theologize in the Catholic tradition -- we need philosophy. We must use the philosophical language of God, person, creation, relationship, identity, natural law, virtues, conscience, moral norms if we are to think about religion and defend it. Theology has some terms and methods of its own, but its fundamental tools are borrowed from philosophy.The growth of religious fundamentalism and the collapse of religious education mean theology is more urgently needed in universities -- especially Catholic ones -- than ever before.