Pausanias, Description of Greece 1.21.1

εἰσὶ δὲ Ἀθηναίοις εἰκόνες ἐν τῶι θεάτρωι καὶ τραγωιδίας καὶ κωμωιδίας ποιητῶν, αἱ πολλαὶ τῶν ἀφανέστερων…τὴν δὲ εἰκόνα τὴν Αἰσχύλου πολλῶι τε ὕστερον τῆς τελευτῆς δοκῶ ποιηθῆναι καὶ τῆς γραφῆς ἣ τὸ ἔργον ἔχει τὸ Μαραθῶνι. ἔφη δὲ Αἰσχύλος μειράκιον ὢν καθεύδειν ἐν ἀγρῶι φυλάσσων σταφυλάς, καί οἱ Διόνυσον ἐπιστάντα κελεῦσαι τραγωιδίαν ποιεῖν· ὡς δὲ ἦν ἡμέρα – πείθεσθαι γὰρ ἐθέλειν – ῥᾶιστα ἤδη πειρώμενος ποιεῖν.

The Athenians have statues of tragic and comic poets in their theatre, most of the poets being unknown…. But I think that the statue of Aeschylus was made much later than his death and the painting which shows the events at Marathon. Aeschylus said that when he was a lad, he was sleeping in a field guarding grapes when Dionysus appeared to him and ordered him to write tragedy. But when it was day, for he wanted to obey, he attempted to compose and was already able to do so very easily.

Relevant guides	Aeschylus