SOCRATES: And is not the same person able to persuade one individual singly and many individuals of the things which he knows? The grammarian, for example, can persuade one and he can persuade many about letters.

ALCIBIADES: True.

SOCRATES: And about number, will not the same person persuade one and persuade many?

ALCIBIADES: Yes.

SOCRATES: And this will be he who knows number, or the arithmetician?

ALCIBIADES: Quite true.

SOCRATES: And cannot you persuade one man about that of which you can persuade many?

ALCIBIADES: I suppose so.

SOCRATES: And that of which you can persuade either is clearly what you know?

ALCIBIADES: Yes.