Drank hemlock and died. Socrates' account of the charges against him. Socrates talks about the claim that there is no one wiser, according to the oracle at Delphi. Socrates goes about and asks questions of other, purportedly wise people. That they think they are wise when in fact they are not.
True harm involves remaining in the wretchedness of ignorance and vice.
And we do best when we have compassion for them, espescially since a simple wish to see them hurt cannot actually hurt them. It will certainly harm us, though. Plato 35c Better to inform and persuade a person than to punish her. Is this different than in our world today. Self-concern pales in comparison to the pursuit of the good, the true, and the just.