Sayings of Socrates 43

He showed equal ability in both directions, in persuading and dissuading men. 

Thus, after conversing with Theaetetus about knowledge, he sent him away, as Plato says, fired with a divine impulse; but when Euthyphro had indicted his father for manslaughter, Socrates, after some conversation with him upon piety, diverted him from his purpose. 

Lysis, again, he turned, by exhortation, into a most virtuous character. For he had the skill to draw his arguments from facts. And when his son Lamprocles was violently angry with his mother, Socrates made him feel ashamed of himself, as I believe Xenophon has told us. 

When Plato's brother Glaucon was desirous of entering upon politics, Socrates dissuaded him, as Xenophon relates, because of his want of experience; but on the contrary he encouraged Charmides to take up politics because he had a gift that way.

—Diogenes Laërtius, Lives of the Eminent Philosophers 2.29

IMAGE: Jose Aparicio Ingalda, Socrates Teaching a Young Man (1811)