That is out of civility to you, he replied.
You are very kind, I said; and would you have the goodness also to inform me, whether you think that a state, or an army, or a band of robbers and thieves, or any other gang of evil-doers could act at all if they injured one another?
[D]No indeed, he said, they could not.
But if they abstained from injuring one another, then they might act together better?
Yes.
And this is because injustice creates divisions and hatreds and fighting, and justice imparts harmony and friendship; is not that true, Thrasymachus?
Perfect injustice, whether in state or individuals, is destructive to them. I agree, he said, because I do not wish to quarrel with you.
How good of you, I said; but I should like to know also whether injustice, having this tendency to arouse hatred, wherever existing, among slaves or among freemen, will not make them hate one another and set them at variance and render them incapable of common action?
Certainly.
[E]And even if injustice be found in two only, will they not quarrel and fight, and become enemies to one another and to the just?