Plato, Epinomis 974d

μετὰ σοῦ κατὰ χρόνον ἂν γενομένῃ, δοξάσαι περὶ αὐτῶν εἰς αὖθις τὸ ἀληθέστατον. τὰς ἄλλας τοίνυν ὅσαι ἐπιστῆμαι μέν εἰσιν λεγόμεναι, σοφὸν δὲ οὐκ ἀποτελοῦσιν τὸν λαμβάνοντά τε αὐτὰς καὶ ἔχοντα, πρῶτον διεξιτέον, ὅπως ταύτας ἐκποδὼν θέμενοι, πειρώμεθα ἐκείνας ὧν δεόμεθα παραθέσθαι τε καὶ παραθέμενοι μανθάνειν. πρῶτον μὲν τοίνυν ὧν πρῶτον δεῖ θνητῷ γένει, ἴδωμεν

in the hope which in time you will surely give us of forming hereafter the truest opinion on these matters. Then first we must go through the other sciences, which are reputed as such, but do not render him wise who acquires and possesses them; in order that, having put them out of the way, we may try to bring forward those that we require, and having brought them forward, to learn them. First, therefore, let us observe that while the sciences which are first needs of the human race