 There are similar passages elsewhere in Descartes’ corpus, where the view that Descartes that takes himself to be able to express, and to express intelligibly, is that “there is always a single identical and perfectly simple act by means of which he [God] simultaneously understands, wills, and accomplishes everything.” If God is wholly immutable and wills the truths of mathematics and geometry in a single act for eternity, it would appear that we are entitled to infer the result that those truths are necessary, just like we can infer from the impossibility of divine deception that our clear and distinct perceptions are true. We might also consider the Third Meditation passage in which Descartes says that in God there is absolutely nothing that is potential (AT 7:47, CSM 2:32). If there is just a single activity in God, and if it is simple and eternal, and also immutable, then it makes no sense to talk of God as changing course and actualizing an alternative set of possibilities aside from than the one that actually obtains. There do not exist alternative possible eternal truths, and there does not exist the possibility of a change in God’s eternal and immutable will, and so (contra Frankfurt et al) eternal truths are absolutely necessary.