gre ed. Burnet 1903 285a1-285bμετρήσεως μὲν γὰρ δή τινα τρόπον πάνθ᾽ ὁπόσα ἔντεχνα μετείληφεν: διὰ δὲ τὸ μὴ κατ᾽ εἴδη συνειθίσθαι σκοπεῖν διαιρουμένους ταῦτά τε τοσοῦτον διαφέροντα συμβάλλουσιν εὐθὺς εἰς ταὐτὸν ὅμοια νομίσαντες, καὶ τοὐναντίον αὖ τούτου δρῶσιν ἕτερα οὐ κατὰ μέρη διαιροῦντες, δέον, ὅταν (285b) μὲν τὴν τῶν πολλῶν τις πρότερον αἴσθηται κοινωνίαν, μὴ προαφίστασθαι πρὶν ἂν ἐν αὐτῇ τὰς διαφορὰς ἴδῃ πάσας ὁπόσαιπερ ἐν εἴδεσι κεῖνται, τὰς δὲ αὖ παντοδαπὰς ἀνομοιότητας, ὅταν ἐν πλήθεσιν ὀφθῶσιν, μὴ δυνατὸν εἶναι δυσωπούμενον παύεσθαι πρὶν ἂν σύμπαντα τὰ οἰκεῖα ἐντὸς μιᾶς ὁμοιότητος ἕρξας γένους τινὸς οὐσίᾳ περιβάληται.
eng tr. Jowett 1817-1893But these persons, because they are not accustomed to distinguish classes according to real forms, jumble together two widely different things, relation to one another, and to a standard, under the idea that they are the same, and also fall into the converse error of dividing other things not according to their real parts. Whereas the right way is, if a man has first seen the unity of things, to go on with the enquiry and not desist until he has found all the differences contained in it which form distinct classes; nor again should he be able to rest contented with the manifold diversities which are seen in a multitude of things until he has comprehended all of them that have any affinity within the bounds of one similarity and embraced them within the reality of a single kind.
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