And as, when our eye beholds the products of an artist’s labour, the mind, immediately on perceiving anything of unusual artistic excellence, burns to know of what nature it is, or how it was formed, or to what purposes it was fashioned; so, in a much greater degree, and in one that is beyond all comparison, does the mind burn with an inexpressible desire to know the reason of those things which we see done by God. This desire, this longing, we believe to be unquestionably implanted within us by God; and as the eye naturally seeks the light and vision, and our body naturally desires food and drink, so our mind is possessed with a becoming and natural desire to become acquainted with the truth of God and the causes of things
— De Principiis. Bk. II. Ch. XI