
Glaucon would like Socrates to prove that justice is not only desirable, but that it belongs to the highest class of desirable things: those desired both for their own sake and their consequences. Glaucon gives a lecture in which he argues first that the origin of justice was in social contracts aimed at preventing one from suffering injustice and being unable to take revenge, second that all those who practice justice do so unwillingly and out of fear of punishment, and third that the life of the unjust man is far more blessed than that of the just man.

Socrates' young companions, Glaucon and Adeimantus, continue the argument of Thrasymachus for the sake of furthering the discussion.


Socrates believes he has answered Thrasymachus and is done with the discussion of justice.
