SOC. But now, if we are concerned about the likeness of our faces,

 
we must consider whether he who speaks is a painter, or not. THEAET. I think we must. SOC. Well, is Theodorus a painter? THEAET. Not so far as I know. SOC. Nor a geometrician, either? THEAET. Oh yes, decidedly, Socrates. SOC. And an astronomer, and an arithmetician, and a musician, and in general an educated man? THEAET. I think so. SOC. Well then, if he says, either in praise or blame, that we have some physical resemblance, it is not especially worth while to pay attention to him. THEAET. Perhaps not. SOC. But what if he should praise the soul of one of us for virtue and wisdom? Is it not worth while for the one who hears to examine eagerly the one who is praised, and for that one to exhibit his qualities with eagerness? THEAET. Certainly, Socrates. SOC. Then, my dear Theaetetus, this is just the time for you to exhibit your qualities and for me to examine them; for I assure you that Theodorus, though he has praised many foreigners and citizens to me, never praised anyone as he praised you just now. THEAET. A good idea, Socrates; but make sure
 
that he was not speaking in jest. SOC. That is not Theodorus’s way. But do not seek to draw back from your agreement on the pretext that he is jesting, or he will be forced to testify under oath; for certainly no one will accuse him of perjury. Come, be courageous and hold to the agreement. THEAET. I suppose I must, if you say so. SOC. Now tell me; I suppose you learn some geometry from Theodorus? THEAET. Yes. SOC. And astronomy and harmony and arithmetic? THEAET. I try hard to do so. SOC. And so do I, my boy, from him and from any others who I think know anything about these things. But nevertheless, although in other respects I get on fairly well in them, yet I am in doubt about one little matter, which should be investigated with your help and that of these others. Tell me, is not learning growing wiser about that which one learns? THEAET. Of course. SOC. And the wise, I suppose, are wise by wisdom. THEAET. Yes. SOC. And does this differ at all from knowledge? THEAET. Does what differ? SOC. Wisdom. Or are not people wise in that of which they have knowledge? THEAET. Of course. SOC. Then knowledge and wisdom are the same thing? THEAET. Yes.