On Anger, Book II, VIII

Why need I dwell upon individual cases? Be assured, when you see the forum crowded with a multitude, the Saepta [26] swarming with people, or the great Circus, in which the greater part of the people find room to show themselves at once, that among them there are as many vices as there are men.

Among those whom you see in the garb of peace there is no peace: for a small profit any one of them will attempt the ruin of another: no one can gain anything save by another’s loss.

They hate the fortunate and despise the unfortunate: they grudgingly endure the great, and oppress the small: they are fired by diverse lusts: they would wreck everything for the sake of a little pleasure or plunder: they live as though they were in a school of gladiators, fighting with the same people with whom they live: it is like a society of wild beasts, save that beasts are tame with one another, and refrain from biting their own species, whereas men tear one another, and gorge themselves upon one another.

They differ from dumb animals in this alone, that the latter are tame with those who feed them, whereas the rage of the former preys on those very persons by whom they were brought up.