Sextus Empiricus Pyrrhoniae Hypotyposes 1.14.68

[68] But if he possesses this virtue, then, since the virtues are interdependent, he possesses also all the other virtues; and these, say the philosophers, ¹ the majority of men do not possess. That the dog is also valiant we see by the way he repels attacks, and intelligent as well, as Homer too testified ² when he sang how Odysseus went unrecognized by all the people of his own household and was recognized only by the dog Argus, who neither was deceived by the bodily alterations of the hero nor had lost his original apprehensive impression, which indeed he evidently retained better than the men.