1. A plot does not have unity, as some people think, simply because it deals with a single hero. Many and indeed innumerable things happen to an individual, some of which do not go to make up any unity, and similarly an individual is concerned in many actions which do not combine into a single piece of action.
1. μῦθος δ’ ἐστὶν εἷς οὐχ ὥσπερ τινὲς οἴονται ἐὰν περὶ ἕνα ᾖ· πολλὰ γὰρ καὶ ἄπειρα τῷ ἑνὶ συμβαίνει, ἐξ ὧν ἐνίων οὐδέν ἐστιν ἕν· οὕτως δὲ καὶ πράξεις ἑνὸς πολλαί εἰσιν, ἐξ ὧν μία οὐδεμία γίνεται πρᾶξις.
2. It seems therefore that all those poets are wrong who have written a Heracleid or Theseid or other such poems. They think that because Heracles was a single individual the plot must for that reason have unity.
2. διὸ πάντες ἐοίκασιν ἁμαρτάνειν ὅσοι τῶν ποιητῶν Ἡρακληίδα Θησηίδα καὶ τὰ τοιαῦτα ποιήματα πεποιήκασιν· οἴονται γάρ, ἐπεὶ εἷς ἦν ὁ Ἡρακλῆς, ἕνα καὶ τὸν μῦθον εἶναι προσήκειν.
3. But Homer, supreme also in all other respects, was apparently well aware of this truth either by instinct or from knowledge of his art. For in writing an Odyssey he did not put in all that ever happened to Odysseus, his being wounded on Parnassus, for instance, or his feigned madness when the host was gathered(these being events neither of which necessarily or probably led to the other), but he constructed his Odyssey round a single action in our sense of the phrase. And the Iliad the same.
3. ὁ δ’ Ὅμηρος ὥσπερ καὶ τὰ ἄλλα διαφέρει καὶ τοῦτ’ ἔοικεν καλῶς ἰδεῖν, ἤτοι διὰ τέχνην ἢ διὰ φύσιν· Ὀδύσσειαν γὰρ ποιῶν οὐκ ἐποίησεν ἅπαντα ὅσα αὐτῷ συνέβη, οἷον πληγῆναι μὲν ἐν τῷ Παρνασσῷ, μανῆναι δὲ προσποιήσασθαι ἐν τῷ ἀγερμῷ, ὧν οὐδὲν θατέρου γενομένου ἀναγκαῖον ἦν ἢ εἰκὸς θάτερον γενέσθαι, ἀλλὰ περὶ μίαν πρᾶξιν οἵαν λέγομεν τὴν Ὀδύσσειαν συνέστησεν, ὁμοίως δὲ καὶ τὴν Ἰλιάδα.
4. As then in the other arts of representation a single representation means a representation of a single object, so too the plot being a representation of a piece of action must represent a single piece of action and the whole of it; and the component incidents must be so arranged that if one of them be transposed or removed, the unity of the whole is dislocated and destroyed. For if the presence or absence of a thing makes no visible difference, then it is not an integral part of the whole.
4. χρὴ οὖν, καθάπερ καὶ ἐν ταῖς ἄλλαις μιμητικαῖς ἡ μία μίμησις ἑνός ἐστιν, οὕτω καὶ τὸν μῦθον, ἐπεὶ πράξεως μίμησίς ἐστι, μιᾶς τε εἶναι καὶ ταύτης ὅλης, καὶ τὰ μέρη συνεστάναι τῶν πραγμάτων οὕτως ὥστε μετατιθεμένου τινὸς μέρους ἢ ἀφαιρουμένου διαφέρεσθαι καὶ κινεῖσθαι τὸ ὅλον· ὃ γὰρ προσὸν ἢ μὴ προσὸν μηδὲν ποιεῖ ἐπίδηλον, οὐδὲν μόριον τοῦ ὅλου ἐστίν.