Rolf Ahlers is the Reynolds Professor of Philosophy and Religion at Russell Sage College. We invited him to answer the question “What is Philosophy of Religion?” as part of our “Philosophers of Religion on Philosophy of Religion” series.
Philosophy of religion is rooted in the absolute and is therefore skeptical of finite knowledge that is internally contradicted as shown by Kant in his antinomy of reason. All religions thrive on that absolute, the negative form of all that is. It is radically different, ab-solved, separate and independent from and therefore not available to finitude, specifically not available to the conceptual grasp; but as its radical negation it is the opposite of irrationalism, namely reason as such. Reason has since the most ancient times also been known as the certainty of pistis=faith. The absolute, unlike finitude, is autarchic, without presuppositions and self-justifying. Finitude requires justification from outside. Justifying itself, the infinite is unshakably certain. It is necessarily one, and free because it is self-causing and the arche, beginning of all.





