

Socrates' ideal city depends on education, specialization, and social structures that define family, behavior, and loyalty to the city. Once they have defined a just city, Socrates believes, they'll be able to examine justice in an individual. Instead, he proposes to "create" an ideal city that will show justice on a large scale. But Socrates does not state what his own idea of justice is. Socrates soon proves that Cephalus and Polemarchus' conception of justice as telling the truth and paying what is owed is insufficient, and he likewise disproves Thrasymachus's belief that justice is simply whatever is of most advantage to the stronger person or people.


There, Socrates joins a discussion with Cephalus, Polemarchus, Glaucon, Adeimantus, and the Sophist Thrasymachus about the nature of justice. After a religious festival, Socrates is invited to the house of a wealthy merchant named Cephalus.
