In practice, when we survey the history of Christian thought, we do see considerable overlap between philosophy and theology. With respect to their topics of inquiry, philosophers and theologians alike ask questions about epistemology, axiology, and political theory, as well as about metaphysics and fundamental ontology. Similarly, with respect to their methods of inquiry, philosophers and theologians alike interpret authoritative texts, deploy arguments, and marshal evidence to support their conclusions. Here one might insist that Christian theological claims are grounded by appeals to “faith” or “authority”, whereas philosophical claims are grounded by appeals to “reason”. This contrast is promising when suitably developed, but it is not as sharp as one might initially suppose. Theology also makes appeals to common sense and ordinary human reason, and philosophy also has its versions of faith and authority.