Plato, Laws 918b

γὰρ κατὰ πόλιν πᾶσα γέγονεν οὐ βλάβης ἕνεκα τό γε κατὰ φύσιν, πᾶν δὲ τοὐναντίον· πῶς γὰρ οὐκ εὐεργέτης πᾶς ὃς ἂν οὐσίαν χρημάτων ὡντινωνοῦν, ἀσύμμετρον οὖσαν καὶ ἀνώμαλον, ὁμαλήν τε καὶ σύμμετρον ἀπεργάζηται; τοῦτο ἡμῖν χρὴ φάναι καὶ τὴν τοῦ νομίσματος ἀπεργάζεσθαι δύναμιν, καὶ τὸν ἔμπορον ἐπὶ τούτῳ τετάχθαι δεῖ λέγειν. καὶ μισθωτὸς καὶ πανδοκεὺς καὶ ἄλλα, τὰ μὲν εὐσχημονέστερα,

and then impose on it a law. The natural purpose for which all retail trading comes into existence in a State is not loss, but precisely the opposite; for how can any man be anything but a benefactor if he renders even and symmetrical the distribution of any kind of goods which before was unsymmetrical and uneven? And this is, we must say, the effect produced by the power of money, and we must declare that the merchant is ordained for this purpose. And the hireling and the innkeeper and the rest—some more and some