[193a]
knows Theodorus and Theaetetus, but sees neither of them and has no other perception of them, he never could have the opinion within himself that Theaetetus is Theodorus. Am I right or wrong?Theaetetus
You are right.Socrates
Now that was the first of the cases of which I spoke.Theaetetus
Yes, it was.Socrates
The second is this: knowing one of you and not knowing the other, and not perceiving either of you, I never could think that the one whom I know is the one whom I do not know.Theaetetus
Right.Socrates
And this is the third case: not knowing and not perceiving either of you,
You are right.Socrates
Now that was the first of the cases of which I spoke.Theaetetus
Yes, it was.Socrates
The second is this: knowing one of you and not knowing the other, and not perceiving either of you, I never could think that the one whom I know is the one whom I do not know.Theaetetus
Right.Socrates
And this is the third case: not knowing and not perceiving either of you,