Persons of the Dialogue: Socrates, who is the narrator; Glaucon; Adeimantus; Polemarchus; Cephalus; Thrasymachus; Cleitophon; and others who are mute auditors.
Scene: The house of Cephalus at the Piraeus; the whole dialogue is narrated by Socrates the day after it actually took place to Timaeus, Hermocrates, Critias, and a nameless person, who are introduced in the Timaeus.
Dramatic Date: 429 BCE; Socrates is 39 years old.