according to which, when we meet with sensible objects, we do not simply receive impressions from them, but we also select[1] something from them, and subtract something, and add, and compound by means of them these things or those, and, in fact, pass from some to other things which, in a manner, resemble them: is not even this sufficient to move some men, and to induce them not to forget the workman? If not so, let them explain to us what it is that makes each several thing, or how it is possible that things so wonderful and like the contrivances of art should exist by chance and from their own proper motion?
What, then, are these things done in us only? Many, indeed, in us only, of which the rational animal had peculiarly need; but you will find many common to us with irrational animals. Do they then understand what is done? By no means. For use is one thing, and understanding is another: God had need of irrational animals to make use of appearances, but of us to understand the use of appearances.[2] It is therefore enough for them to eat and to drink, and to sleep and to copulate, and to do all the other things which they severally do. But for us, to whom He has given also the intellectual faculty, these things are not sufficient; for unless we act in a proper and orderly manner, and conformably to the nature and constitution of each thing, we shall never attain our true end. For where the constitutions of living beings are different, there also the acts and the ends are different. In those animals then whose constitution is adapted only to use, use alone is enough: but in an animal (man), which has also the power of understanding the use, unless thero be the due exercise of the understanding, he will never attain his proper end. Well then God constitutes every animal, one to be eaten, another to serve for agriculture, another to supply cheese, and another for some like use; for which purposes what need is there to understand appearances and to be able to distinguish them? But God has introduced man to be a spectator of God[3] and of His
