But as God fashions them in and for us in such a way that we could form them ourselves it we knew optics and geometry as God does, if we knew everything that occurs in our eyes and our The Search after brain, and if our soul could act on its own and cause its own sensations, I attribute to the soul the perfonnance of judgments and inferences as well as the subsequent production of its sensations, which can be the effect only of an infinite power and intelligence.