531e
τὸν εὖ λέγοντα;
Ἴων:
φημί.
Σωκράτης:
πότερον οὖν ὁ αὐτὸς ὅσπερ καὶ τοὺς κακῶς λέγοντας, ἢ ἄλλος;
Ἴων:
ὁ αὐτὸς δήπου.
Σωκράτης:
οὐκοῦν ὁ τὴν ἀριθμητικὴν τέχνην ἔχων οὗτός ἐστιν;
Ἴων:
ναί.
Σωκράτης:
τί δ'; ὅταν πολλῶν λεγόντων περὶ ὑγιεινῶν σιτίων ὁποῖά ἐστιν, εἷς τις ἄριστα λέγῃ, πότερον ἕτερος μέν τις τὸν ἄριστα λέγοντα γνώσεται ὅτι ἄριστα λέγει, ἕτερος δὲ τὸν κάκιον ὅτι κάκιον, ἢ ὁ αὐτός;
Ἴων:
δῆλον δήπου, ὁ αὐτός.
Σωκράτης:
τίς οὗτος; τί ὄνομα αὐτῷ;
Ἴων:
ἰατρός.
Σωκράτης:
οὐκοῦν ἐν κεφαλαίῳ λέγομεν ὡς ὁ αὐτὸς γνώσεται ἀεί, περὶ τῶν αὐτῶν πολλῶν λεγόντων,
531e
Ion:
I agree.
Socrates:
And will this some one be the same as he who can distinguish the bad speakers, or different?
Ion:
The same, I suppose.
Socrates:
And he will be the man who has the art of numeration?
Ion:
Yes.
Socrates:
And again, when several are talking about what kinds of foods are wholesome, and one of them speaks better than the rest, will it be for two different persons to distinguish the superiority of the best speaker and the inferiority of a worse one, or for the same?
Ion:
Obviously, I should say, for the same.
Socrates:
Who is he? What is his name?
Ion:
A doctor.
Socrates:
And so we may state, in general terms, that the same person will always distinguish, given the same subject and several persons talking about it,