Chapter 10
Plots are either simple or complex, since the actions they represent are naturally of this twofold description. The action, proceeding in the way defined, as one continuous whole, I call simple, when the change in the hero's fortunes takes place without Peripety or Discovery; and complex, when it involves one or the other, or both. These should each of them arise out of the structure of the Plot itself, so as to be the consequence, necessary or probable, of the antecedents. There is a great difference between a thing happening propter hoc and post hoc.
Κεφάλαιον 10
εἰσὶ δὲ τῶν μύθων οἱ μὲν ἁπλοῖ οἱ δὲ πεπλεγμένοι· καὶ γὰρ αἱ πράξεις ὧν μιμήσεις οἱ μῦθοί εἰσιν ὑπάρχουσιν εὐθὺς οὖσαι τοιαῦται.
λέγω δὲ ἁπλῆν μὲν πρᾶξιν ἧς γινομένης ὥσπερ ὥρισται συνεχοῦς καὶ μιᾶς ἄνευ περιπετείας ἢ ἀναγνωρισμοῦ ἡ μετάβασις γίνεται,
πεπλεγμένην δὲ ἐξ ἧς μετὰ ἀναγνωρισμοῦ ἢ περιπετείας ἢ ἀμφοῖν ἡ μετάβασίς ἐστιν.
ταῦτα δὲ δεῖ γίνεσθαι ἐξ αὐτῆς τῆς συστάσεως τοῦ μύθου, ὥστε ἐκ τῶν προγεγενημένων συμβαίνειν ἢ ἐξ ἀνάγκης ἢ κατὰ τὸ εἰκὸς γίγνεσθαι ταῦτα· διαφέρει γὰρ πολὺ τὸ γίγνεσθαι τάδε διὰ τάδε ἢ μετὰ τάδε.