Since the mid-nineteenth century, the Republic has been Plato’s most famous and widely read dialogue. As in most other Platonic dialogues the main character is Socrates. It is generally accepted that the Republic belongs to the dialogues of Plato’s middle period. In Plato’s early dialogues, Socrates refutes the accounts of his interlocutors and the discussion ends with no satisfactory answer to the matter investigated. In the Republic however, we encounter Socrates developing a position on justice and its relation to eudaimonia (happiness). He provides a long and complicated, but unified argument, in defense of the just life and its necessary connection to the happy life.