The locus classicus for the didactic aspect of Greek tragedy is, of course, Aristophanes' Frogs, especially the passage at 1009–10 where Aeschylus and Euripides agree that tragic poets are valued τι βελτоυϲ…πоιоμεν τοϲ νθρπουϲ ν ταϲ πλεϲιν. But how seriously should we take this? It is comedy, after all.

At the very end of Plato's Symposium our narrator awakes to find Socrates still hard at it, and making Agathon and Aristophanes agree that the composition of tragedy and comedy is really one and the same thing:… προсαναγκάӡειν τὸν Σωκράτη ὁμολογεῖν αὐτοὺс τοῦ αὐτοῦ ἀνδρὸс εἷναι κωμωιδίαν καὶ τραγωιδίαν ἐπἰсταϲθαι ποιεῖν, καὶ τὸν τέχνηι τραγωιδοποιὸν ὄντα καὶ κωμωιδοποιὸν εἷναι. ταῦτα δὴ ἀναγκαӡομένουϲ αὐτοὺϲ … the two playwrights succumb to sleep, leaving Socrates triumphant. Socrates had to ‘force’ his case; and it (...) is a fact that, though we know of well over 100 fifth-century playwrights, we do not know of a single one who produced both tragedy and comedy. In a famous fragment the comedian Antiphanes complains that the tragedians have an easy time—familiar stories, the deus ex machina etc.—ἡμῖν δὲ ταῦτ' οὐκ ἔсτιν … It is a matter of ‘them’ and ‘us’. Furthermore, there was an entire separate genre besides tragedy and comedy. As Demetrius put it, τραγωιδία χάριταϲ μὲν παραλαμβάνει ἐν πολλοῖϲ, ὁ δὲ γέλωϲ ἐχθρὸϲ τραγωιδίαϲ· οὐδὲ γὰρ ἐπινοήϲειεν ἄν τιϲ τραγωιδίαν παίӡουϲαν, ἐπεὶ ϲάτυρον γράψει ἀντὶ τραγωιδίαϲ. (shrink)