Sophocles said, that only after handling with a light touch the turgidity of Aeschylus and next his harshness and artificiality in composition, did he, as a third step, change the character of the language, which has the most to do with moral character and goodness.
ὁ Σοφοκλῆς ἔλεγε τὸν Αἰσχύλου διαπεπαιχὼς ὄγκον, εἶτα τὸ πικρὸν καὶ κατάτεχνον τῆς αὑτοῦ κατασκευῆς, τρίτον ἤδη τὸ τῆς λέξεως μεταβάλλειν εἶδος, ὅπερ ἐστὶν ἠθικώτατον καὶ βέλτιστον.
Original text (Ancient Greek)