 In laying out Scotus’s proof of the existence of God, I passed rather quickly over the claim that God is infinite. But the divine infinity deserves more detailed treatment. As we have already seen, the concept of “infinite being” has a privileged role in Scotus’s natural theology. As a first approximation, we can say that divine infinity is for Scotus what divine simplicity is for Aquinas. It’s the central divine-attribute generator. But there are some important differences between the role of simplicity in Aquinas and the role of infinity in Scotus. The most important, I think, is that in Aquinas simplicity acts as an ontological spoilsport for theological semantics. Simplicity is in some sense the key thing about God, metaphysically speaking, but it seriously complicates our language about God. God is supposed to be a subsistent simple, but because our language is all derived from creatures, which are all either subsistent but complex or simple but non-subsistent, we don’t have any way to apply our language straightforwardly to God. The divine nature systematically resists being captured in language.