SOCRATES: And what would you say of a state? What is that by the presence
or absence of which the state is improved and better managed and ordered?

ALCIBIADES: I should say, Socrates:--the presence of friendship and the
absence of hatred and division.

SOCRATES: And do you mean by friendship agreement or disagreement?

ALCIBIADES: Agreement.

SOCRATES: What art makes cities agree about numbers?

ALCIBIADES: Arithmetic.

SOCRATES: And private individuals?

ALCIBIADES: The same.

SOCRATES: And what art makes each individual agree with himself?

ALCIBIADES: The same.

SOCRATES: And what art makes each of us agree with himself about the
comparative length of the span and of the cubit? Does not the art of
measure?

ALCIBIADES: Yes.

SOCRATES: Individuals are agreed with one another about this; and states,
equally?