Plato, Laws 686e

καλῶς ἐχρήσατο. οὐκοῦν εὖ καὶ ἐχόντως νοῦν σύ τε πάντα εἶπες καὶ ἐπῃνέσαμεν ἡμεῖς; ἴσως· ἐννοῶ γε μὴν ὡς πᾶς, ὃς ἂν ἴδῃ τι μέγα καὶ δύναμιν ἔχον πολλὴν καὶ ῥώμην, εὐθὺς ἔπαθε τοῦτο, ὡς εἴπερ ἐπίσταιτο ὁ κεκτημένος αὐτῷ χρῆσθαι τοιούτῳ τε ὄντι καὶ τηλικούτῳ, θαυμάστʼ ἂν καὶ πολλὰ κατεργασάμενος εὐδαιμονοῖ.

a wonderful boon to the Greeks. And was it not quite right and sensible of you to say this, and of us to endorse it? Possibly; I conceive, however, that everyone, when he beholds a thing that is large, powerful and strong, is instantly struck by the conviction that, if its possessor knew how to employ an instrument of that magnitude and quality, he could make himself happy by many wonderful achievements.