Plato, Laws 766b

μάλιστα αὐτοῖς καθιστάντα προστάττειν ἐπιμελητήν. αἱ πᾶσαι τοίνυν ἀρχαὶ πλὴν βουλῆς καὶ πρυτάνεων εἰς τὸ τοῦ Ἀπόλλωνος ἱερὸν ἐλθοῦσαι φερόντων ψῆφον κρύβδην, τῶν νομοφυλάκων ὅντινʼ ἂν ἕκαστος ἡγῆται κάλλιστʼ ἂν τῶν περὶ παιδείαν ἄρξαι γενομένων· ᾧ δʼ ἂν πλεῖσται ψῆφοι συμβῶσιν, δοκιμασθεὶς ὑπὸ τῶν ἄλλων ἀρχόντων τῶν ἑλομένων, πλὴν νομοφυλάκων, ἀρχέτω ἔτη πέντε, ἕκτῳ δὲ κατὰ

that one of the citizens who is in every way the most excellent. Therefore all the officials—excepting the Council and the prytaneis—shall go to the temple of Apollo, and shall each cast his vote for whichever one of the Law-wardens he deems likely best to control educational affairs. He who gains most votes, after passing a scrutiny held by the selecting officials, other than the Law-wardens, shall hold office for five years: in the sixth year they shall elect another man for this office