This paper examines a recent attempt at updating Anselm’s ontological argument by employing the notion of mediated and unmediated causal powers. After presenting the updated argument and the underlying metaphysical framework of causal powers that is utilized in the argument, I show that some of the key assumptions can be rejected. Once we closely examine some of the assumptions, it will also be evident that the updated version in some ways collapses back to Anselm’s original version and so is subject (...) to some of the same worries. (shrink)

Oppenheimer & Zalta have re-formulated their non-modal version of the ontological argument, with the help of PROVER9, an automated reasoning engine. The authors end up rejecting the new argument; however, the theist has a rejoinder worth considering. But after presenting the rejoinder, I highlight that the conceivability of the being does not imply its possibility. One lesson is that even non-modal ontological arguments must engage modal matters concerning God. Another lesson is that if PROVER9 is able to derive a conclusion (...) from fewer premises, the proof is sometimes inferior as an argument. (shrink)

Saint Anselm of Canterbury (1033-1109) was the outstanding Christian philosopher and theologian of the eleventh century. He is best known for the celebrated “ontological argument” for the existence of God in chapter two of the Proslogion, but his contributions to philosophical theology (and indeed to philosophy more generally) go well beyond the ontological argument. In what follows I examine Anselm's theistic proofs, his conception of the divine nature, and his account of human freedom, sin, and redemption.