Socrates goes to Piraeus with Glaucon to pray to the goddess.
Observes the impressive festival held by the Athenians and Thracians.
Encounters Polemarchus who asks them to stay for the post-festival activities.
Socrates: Central character and philosopher.
Glaucon: Socrates' friend who accompanies him.
Polemarchus: Son of Cephalus, engages in dialogue with Socrates.
Cephalus: Polemarchus' father, speaks on themes of wealth and old age.
Adeimantus: Brother of Glaucon, part of the discussion.
Thrasymachus: Aggressive interlocutor who opposes Socrates.
Cephalus shares insights on old age and the fading pleasures of life.
Discusses how wealth can influence one’s experience of aging and justice.
Polemarchus cites Simonides: "Justice means giving each his due."
Socrates critiques this definition through dialogues that explore the nature of justice in different circumstances.
Example: Returning weapons to a friend who is not in their right mind (a moral dilemma).
Thrasymachus enters the conversation, challenging Socrates with claims that injustice is more profitable than justice.
Thrasymachus asserts justice serves the interests of the stronger, suggesting rulers define laws that benefit them.
Socrates responds to Thrasymachus’s view by exploring the relationship between injustice, conflict, and the functioning of a society.
Socrates uses questioning to lead characters to reconsider their definitions and beliefs.
The discussion reflects the method of dialectics, examining contrasting viewpoints to arrive at deeper truths about justice, wisdom, and virtue.
The discussion hints at a theory of social contract where rulers are not purely self-interested; real governance involves concern for the ruled.
Socrates concludes that true rulers must think of the good of their subjects, not just themselves.
Socrates begins to deduce that a just man will be happier and more virtuous than an unjust man, questioning the claims of Thrasymachus that injustice is ultimately more advantageous.
The session ends with the acknowledgment that to understand justice fully, one must first clarify what justice actually is.