Certainly.

Him who answers to aristocracy, and whom we rightly call just and good, we have already described.

We have.

Then let us now proceed to describe the inferior sort of natures, being the contentious and ambitious, who answer to the Spartan polity; also the oligarchical, democratical, and tyrannical. Let us place the most just by the side of the most unjust, and when we see them we shall be able to compare the relative happiness or unhappiness of him who leads a life of pure justice or pure injustice. The enquiry will then be completed.

And we shall know whether we ought to pursue injustice, as Thrasymachus advises, or in accordance with the conclusions of the argument to prefer justice.