Plato, Laws 793b

νόμους ἐπονομάζουσιν, οὐκ ἄλλα ἐστὶν ἢ τὰ τοιαῦτα σύμπαντα. καὶ ἔτι γε ὁ νυνδὴ λόγος ἡμῖν ἐπιχυθείς, ὡς οὔτε νόμους δεῖ προσαγορεύειν αὐτὰ οὔτε ἄρρητα ἐᾶν, εἴρηται καλῶς· δεσμοὶ γὰρ οὗτοι πάσης εἰσὶν πολιτείας, μεταξὺ πάντων ὄντες τῶν ἐν γράμμασιν τεθέντων τε καὶ κειμένων καὶ τῶν ἔτι θησομένων, ἀτεχνῶς οἷον πάτρια καὶ παντάπασιν ἀρχαῖα νόμιμα, ἃ καλῶς μὲν τεθέντα καὶ ἐθισθέντα πάσῃ σωτηρίᾳ περικαλύψαντα ἔχει τοὺς τότε γραφέντας

what men call ancestral customs. Moreover, the view which was recently impressed upon us, that one should neither speak of these as laws nor yet leave them without mention, was a right view. For it is these that act as bonds in every constitution, forming a link between all its laws (both those already enacted in writing and those still to be enacted), exactly like ancestral customs of great antiquity, which, if well established and practiced, serve to wrap up securely the laws already written, whereas if they perversely