Plutarch, Bruta animalia ratione uti
Goodwin, Ed.

ULYSSES. In good truth, Gryllus, you are grown, in my conceit, a notable sophister, to discourse at this rate out of a hog's snout, and yet to handle your argument so strenuously. But why have you not all this while spoke a word of temperance?

GRYLLUS. Because I thought you would have contradicted first what I have already said. But you are in haste to hear what I have to say concerning temperance, because that, being the husband of a most temperate and chaste wife, you believe you have set us an example of temperance by abstaining from Circe's embraces. And yet in this you differ nothing from all the beasts; for neither do they desire to approach their superiors, but they pursue their pleasures and amours among those of their own tribe. No wonder is it then, if—like the Mendesian goat in Egypt, which is reported to have been shut up with several most beautiful women, yet never to have offered copulation with them, but when he was at liberty, with a lustful fury flew upon the she-goats—so thou, though a man addicted greatly to venereal pleasures, yet being a man, hast no desire to sleep with a goddess. And for the chastity of thy Penelope, the ten thousand rooks and daws that chatter it abroad do but make it ridiculous and expose it to contempt, there being not one of those birds but, if she loses her mate, continues a widow, not for a small time, but for nine ages of men; so that there is not one of those female rooks that does not surpass in chastity thy fair Penelope above nine times.