The Republic · Characters
Character guide
Key figures in The Republic by Plato.
Skim names here — open a free preview to see character cards and Character Web beside the page as you read.
Socrates
major
Socrates narrates the whole dialogue, drawing friends and rivals alike into an argument that begins with an old man's peace of mind and ends by rebuilding the state from scratch. His method is gentle but relentless: he praises Cephalus's honesty, dismantles Polemarchus's proverbs, and outmaneuvers Thrasymachus without ever claiming to know what justice is. That confessed ignorance is the engine of the book—it keeps the conversation moving toward the ideal city and the education of its guardians.
Glaucon
major
Glaucon is the young Athenian who first urges the group to stay for the torch-race and then pushes the discussion past easy morality. He plays devil's advocate with real relish, laying out the strongest case for injustice so that Socrates must answer it honestly. His challenge transforms the dialogue from a quarrel with a sophist into a serious inquiry into why anyone should be just at all.
Adeimantus
major
Adeimantus joins Glaucon in refusing to let Socrates off with a clever answer, but his worry is more concrete—he has watched education and reputation reward the appearance of virtue rather than virtue itself. He cites the poets and the common talk of his city to show how easily the young are corrupted by what they hear. His insistence forces Socrates to imagine a city whose guardians are shaped by better stories and better laws.
Polemarchus
major
Polemarchus is the young man whose playful ambush—'are you stronger than all these?'—drags Socrates and Glaucon into his father's house and sets the whole dialogue in motion. He inherits the old proverb that justice means helping friends and harming enemies, and defends it with the confidence of a man raised on poetry and tradition. His quick defeat by Socrates clears the ground for the more dangerous challenge of Thrasymachus.
Cephalus
major
Cephalus is the wealthy old man whose house hosts the conversation, and his contentment rests on a lifetime of paying debts and telling the truth. He speaks movingly of how conversation replaces desire as the body weakens, and of the fear that comes to those who have wronged others. His simple definition of justice as honesty and repayment is the first to fall, and its fall opens the question the rest of the book must answer.
Thrasymachus
major
Thrasymachus is the sharp-tongued Chalcedonian who cannot bear Socrates's irony and forces his way into the discussion with a blunt, cynical definition of justice. He argues that rulers make laws for their own advantage and that the just life is really the life of the strong taking what they can. His challenge is the harshest the dialogue faces, and Socrates's struggle to answer him sets the terms for everything that follows.
Cleitophon
minor
A minor interlocutor present at the discussion, who briefly interjects in support of Thrasymachus.
Niceratus
minor
Son of Nicias; he is among the group that joins Polemarchus and accompanies Socrates to Cephalus's house.
Lysias
minor
Brother of Polemarchus, present at the house but does not participate significantly in the philosophical discussion.
Euthydemus
minor
Brother of Polemarchus, present at the house but remains a mute auditor during the dialogue.
Charmantides
minor
A Paeanian who is present at Cephalus's house but does not speak in the dialogue.
