Plato, Laws 747b

πρός τε γὰρ οἰκονομίαν καὶ πρὸς πολιτείαν καὶ πρὸς τὰς τέχνας πάσας ἓν οὐδὲν οὕτω δύναμιν ἔχει παίδειον μάθημα μεγάλην, ὡς ἡ περὶ τοὺς ἀριθμοὺς διατριβή· τὸ δὲ μέγιστον, ὅτι τὸν νυστάζοντα καὶ ἀμαθῆ φύσει ἐγείρει καὶ εὐμαθῆ καὶ μνήμονα καὶ ἀγχίνουν ἀπεργάζεται, παρὰ τὴν αὑτοῦ φύσιν ἐπιδιδόντα θείᾳ τέχνῃ. ταῦτα δὴ πάντα, ἐὰν μὲν ἄλλοις νόμοις τε καὶ ἐπιτηδεύμασιν ἀφαιρῆταί τις τὴν ἀνελευθερίαν καὶ φιλοχρηματίαν ἐκ τῶν ψυχῶν τῶν μελλόντων αὐτὰ

to this organized numerical system. For in relation to economics, to politics and to all the arts, no single branch of educational science possesses so great an influence as the study of numbers: its chief advantage is that it wakes up the man who is by nature drowsy and slow of wit, and makes him quick to learn, mindful and sharp-witted, progressing beyond his natural capacity by art divine. All these subjects of education will prove fair and fitting, provided that you can remove illiberality and avarice, by means of other laws and institutions, from the souls of those