STRANGER: And of which has the Statesman charge,--of the mixed or of the
unmixed race?

YOUNG SOCRATES: Clearly of the unmixed.

STRANGER: I suppose that we must divide this again as before.

YOUNG SOCRATES: We must.

STRANGER: Every tame and herding animal has now been split up, with the
exception of two species; for I hardly think that dogs should be reckoned
among gregarious animals.

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.