A passage from Plato's
Apology that never fails to move me, after Socrates has been sentenced to death:
"This much I ask from them: when my sons grow up, avenge yourselves by causing them the same kind of grief that I caused you, if you think they care for money or anything else more than they care for virtue, or if you think they are somebody when they are nobody. Reproach them as I reproach you, that they do not care for the right things and think they are worthy when they are not worthy of anything. If you do this, I shall have been justly treated by you, and my sons also" (41e-42a).