Book 2 · Section 68

(68) And on this account we see, in the countries of the barbarians, trees and plants grow to the greatest possible size, by reason of the abundance of nourishment which they receive; and we see too, that the irrational animals which are found in these regions are the most prolific of any, but the mind is not so, or, at all events, it is so in a very slight degree, because it is elevated and raised out of the aether itself, while the incessant and uninterrupted evaporations of earth and water have freely boiled over it. (69) Again, the different kinds of fish, and birds, and terrestrial animals, are not grounds for accusing nature, which invites us to pleasure by those means, but are a terrible reproach to us for our intemperate use of them, for it was necessary, for the due completion of the universe, in order that there should be order and regularity in every portion of it, that there should be produced every possible species of animal. But it was not necessary that that animal, which of all others is most akin to wisdom, namely, man, should rush with such eagerness to the enjoyment of it, as to change his nature into something resembling the ferocity of wild beasts; (70) on which account, even up to the present time, those who have any regard for temperance entirely abstain from such things, eating only vegetables, and herbs, and the fruits of trees, as the most delicious and wholesome food.

And these men are instructors for those who look upon the practice of eating such animals to be in accordance with nature, and correct them, and are lawgivers to their respective cities, being men who take care to check the immoderate vehemence of the appetites, and who do not permit the unrestrained use of everything to everybody.