Plato, Laws 793c

νόμους, ἂν δʼ ἐκτὸς τοῦ καλοῦ βαίνῃ πλημμελῶς, οἷον τεκτόνων ἐν οἰκοδομήμασιν ἐρείσματα ἐκ μέσου ὑπορρέοντα, συμπίπτειν εἰς ταὐτὸν ποιεῖ τὰ σύμπαντα, κεῖσθαί τε ἄλλα ὑφʼ ἑτέρων, αὐτά τε καὶ τὰ καλῶς ὕστερον ἐποικοδομηθέντα, τῶν ἀρχαίων ὑποπεσόντων. ἃ δὴ διανοουμένους ἡμᾶς, ὦ Κλεινία, σοὶ δεῖ τὴν πόλιν καινὴν οὖσαν πάντῃ συνδεῖν, μήτε μέγα μήτε σμικρὸν παραλιπόντας εἰς δύναμιν ὅσα

go aside from the right way, like builders’ props that collapse under the middle of a house, they bring everything else tumbling down along with them, one thing buried under another, first the props themselves and then the fair superstructure, once the ancient supports have fallen down. Bearing this in mind, Clinias, we must clamp together this State of yours, which is a new one, by every possible means, omitting nothing great or small