All things of human reason conjoin, and as it were, centre in this that the One God is the Creator of the universe. Consequently, a man, given reason, does not and cannot think otherwise from his general understanding. Say to anyone of sound reason that there are two Creators of the universe, and you will experience in yourself his repugnance, perhaps from the mere sound of the expression in the ear. And so it is clear that all things of human reason conjoin and centre in this, that there is One God. There are two reasons for this. The first is that the very faculty of thinking rationally, considered in itself, does not belong to man but to God with him. Upon this faculty the generality of human reason depends and hence this tendency causes man to see as from himself. The second is because by that faculty man is either in the light (lux) of heaven, or derives the general nature of his thoughts therefrom; and it is a universal [idea] of the light of heaven that God is One. It is otherwise if man by that faculty has perverted the lower things of his understanding. He is indeed endowed with that faculty, but by a twisting of the lower parts, he turns it in another direction. Hence his reason becomes unsound.