That makes no difference;—and must you not, if you are knowing, know all things?

Certainly not, I said, for there are many other things which I do not know.

And if you do not know, you are not knowing.

Yes, friend, of that which I do not know.

Still you are not knowing, and you said just now that you were knowing; and therefore you are and are not at the same time, and in reference to the same things.

A pretty clatter, as men say, Euthydemus, this of yours! and will you explain how I possess that knowledge for which we were seeking? Do you mean to say that the same thing cannot be and also not be; and therefore, since I know one thing, that I know all, for I cannot be knowing and not knowing at the same time, and if I know all things, then I must have the knowledge for which we are seeking—May I assume this to be your ingenious notion?

Out of your own mouth, Socrates, you are convicted, he said.

Well, but, Euthydemus, I said, has that never happened to you? for if I am only in the same case with you and our beloved Dionysodorus, I cannot complain. Tell me, then, you two, do you not know some things, and not know others?

Certainly not, Socrates, said Dionysodorus.

What do you mean, I said; do you know nothing?