A Quarrel (n.) like Agamemnon's with Achilles starts from total agreement — both say one must do what is right — and breaks out only over whether Chryseis must go back.
A Quarrel (n.) was something Socrates not only avoided but kept others from, because he knew no one can control another person's mind.
A Quarrel (n.) has nothing left to be about once you place good and evil in your own choices: what would you fight over, things that are nothing to you?
A Quarrel (n.) makes no sense among those who have sound souls: "Do you want rational souls? Sound ones? Then why don't you try to get them?" "Because we have them." "Why, then, do you strive and quarrel?"
A Quarrel (n.) arises in applying a principle both sides accept: Agamemnon and Achilles agreed entirely that one must do what is proper; the Iliad is a fight about applying it to Chryseis.
A Quarrel (n.) is something the good person neither starts nor, where he can, allows others to have — Socrates' whole life is the model.