It is not necessary to discuss at length a minor question which has been raised by Boeckh, respecting the imaginary date at which the conversation was held (the year 411 B.C. which is proposed by him will do as well as any other); for a writer of fiction, and especially a writer who, like Plato, is notoriously careless of chronology (cp. Rep. i. 336, Symp. 193 A, etc.), only aims at general probability. Whether all the persons mentioned in the Republic could ever have met at any one time is not a difficulty which would have occurred to an Athenian reading the work forty years later, or to Plato himself at the time of writing (any more than to Shakespeare respecting one of his own dramas); and need not greatly trouble us now. Yet this may be a question having no answer 'which is still worth asking,' because the investigation shows that we cannot argue historically from the dates in Plato; it would be useless therefore to waste time in inventing far-fetched reconcilements of them in order to avoid chronological difficulties, such, for example, as the conjecture of C. F. Hermann, that Glaucon and Adeimantus are not the brothers but the uncles of Plato (cp. Apol. 34 A), or the fancy of Stallbaum that Plato intentionally left anachronisms indicating the dates at which some of his Dialogues were written. * * * * * The principal characters in the Republic are Cephalus, Polemarchus, Thrasymachus, Socrates, Glaucon, and Adeimantus. Cephalus appears in the introduction only, Polemarchus drops at the end of the first argument, and Thrasymachus is reduced to silence at the close of the first book. The main discussion is carried on by Socrates, Glaucon, and Adeimantus. Among the company are Lysias (the orator) and Euthydemus, the sons of Cephalus and brothers of Polemarchus, an unknown Charmantides--these are mute auditors; also there is Cleitophon, who once interrupts (340 A), where, as in the Dialogue which bears his name, he appears as the friend and ally of Thrasymachus.