  Still, the Republic primarily requires an answer to Glaucon  and Adeimantus’ question, and that answer does not depend logically  on any strong claims for the analogy between cities and persons.  Rather, it depends upon a persuasive account of justice as a personal virtue, and persuasive reasons why one is always happier being just  than unjust. So we can turn to these issues before returning to  Socrates’ remarks about the successful city.