[161] for what wrestler could be compared in might with the strength of a bull or of an elephant? And what runner could put himself on a level with the speed of a hound or of a hare? And the most sharp-sighted of men is absolutely blind if his sight is compared with that of antelopes or eagles. Again, in hearing and in smell, often other animals are very far beyond man; as, for instance, the ass, which appears to be the stupidest of all animals, would show that our sense of hearing is very obtuse if he were brought into comparison with us. The dog, too, would make the nostrils in man appear a perfectly useless part from the exceeding superiority of the quickness of his own sense of [136] smell; for, in him, that sense is pushed to such a degree that it almost equals the rapidity of the eye-sight.