YOUNG SOCRATES: Certainly not; but how shall we divide the two remaining species?
STRANGER: There is a measure of difference which may be appropriately employed by you and Theaetetus, who are students of geometry.
YOUNG SOCRATES: What is that?
STRANGER: The diameter; and, again, the diameter of a diameter. (Compare Meno.)
YOUNG SOCRATES: What do you mean?
STRANGER: How does man walk, but as a diameter whose power is two feet?
YOUNG SOCRATES: Just so.
STRANGER: And the power of the remaining kind, being the power of twice two feet, may be said to be the diameter of our diameter.
YOUNG SOCRATES: Certainly; and now I think that I pretty nearly understand you.
STRANGER: In these divisions, Socrates, I descry what would make another famous jest.