Plato, Laws 761a

τῷ τόπῳ ἑκάστῳ πρὸς ταῦτα, διʼ ἐκείνων ποιοῦντας, ἐκείνοις ἐπιστατοῦντας, τῶν οἰκείων ἔργων αὐτῶν ἀργίας ὅτι μάλιστα ἐκλεγομένους. δύσβατα δὲ δὴ πάντα ποιεῖν μὲν τοῖς ἐχθροῖς, τοῖς δὲ φίλοις ὅτι μάλιστα εὔβατα, ἀνθρώποις τε καὶ ὑποζυγίοις καὶ βοσκήμασιν, ὁδῶν τε ἐπιμελουμένους ὅπως ὡς ἡμερώταται ἕκασται γίγνωνται, καὶ τῶν ἐκ Διὸς ὑδάτων, ἵνα τὴν χώραν μὴ κακουργῇ, μᾶλλον δʼ ὠφελῇ ῥέοντα ἐκ

and its wealth; and for these purposes they shall make use of the beasts of burden and the servants in each district, employing the former and supervising the latter, and choosing always, so far as possible, the times when these people are free from their own business. In all respects they must make movement as difficult as possible for enemies, but for friends—whether men, mules or cattle—as easy as possible, by attending to the roads, that they all may become as level as possible, and to the rain-waters, that they may benefit instead of injuring the country, as they flow down from the heights into all the