Yes, said Ctesippus.
And that is a distinct thing apart from other things?
Certainly.
And he who says that thing says that which is?
Yes.
And he who says that which is, says the truth. And therefore Dionysodorus, if he says that which is, says the truth of you and no lie.
Yes, Euthydemus, said Ctesippus; but in saying this, he says what is not.
Euthydemus answered: And that which is not is not?
True.
And that which is not is nowhere?
Nowhere.
And can anyone do anything about that which has no existence, or do to Cleinias that which is not and is nowhere?
I think not, said Ctesippus.
Well, but do rhetoricians, when they speak in the assembly, do nothing?
Nay, he said, they do something.
And doing is making?
Yes.
And speaking is doing and making?
He agreed.
Then no one says that which is not, for in saying what is not he would be doing something; and you have already acknowledged that no one can do what is not. And therefore, upon your own showing, no one says what is false; but if Dionysodorus says anything, he says what is true and what is.
Yes, Euthydemus, said Ctesippus; but he speaks of things in a certain way and manner, and not as they really are.
Why, Ctesippus, said Dionysodorus, do you mean to say that anyone speaks of things as they are?
Yes, he said—all gentlemen and truth-speaking persons.
And are not good things good, and evil things evil?
He assented.