SOCRATES: And in like manner the harper and gymnastic-master?
ALCIBIADES: Certainly.
SOCRATES: When a person is enabled to impart knowledge to another, he thereby gives an excellent proof of his own understanding of any matter.
ALCIBIADES: I agree.
SOCRATES: Well, and did Pericles make any one wise; did he begin by making his sons wise?
ALCIBIADES: But, Socrates, if the two sons of Pericles were simpletons, what has that to do with the matter?
SOCRATES: Well, but did he make your brother, Cleinias, wise?
ALCIBIADES: Cleinias is a madman; there is no use in talking of him.
SOCRATES: But if Cleinias is a madman and the two sons of Pericles were simpletons, what reason can be given why he neglects you, and lets you be as you are?
ALCIBIADES: I believe that I am to blame for not listening to him.