YOUNG SOCRATES: Certainly.
STRANGER: And to this art of calculation which discerns the differences of numbers shall we assign any other function except to pass judgment on their differences?
YOUNG SOCRATES: How could we?
STRANGER: You know that the master-builder does not work himself, but is the ruler of workmen?
YOUNG SOCRATES: Yes.
STRANGER: He contributes knowledge, not manual labour?
YOUNG SOCRATES: True.
STRANGER: And may therefore be justly said to share in theoretical science?
YOUNG SOCRATES: Quite true.
STRANGER: But he ought not, like the calculator, to regard his functions as at an end when he has formed a judgment;—he must assign to the individual workmen their appropriate task until they have completed the work.