Plato, Laws 740b

ἐγχωρίους θεούς τε ἅμα καὶ δαίμονας. ὅπως δʼ ἂν ταῦτα εἰς τὸν ἀεὶ χρόνον οὕτως ἔχοντα ὑπάρχῃ, τάδε προσδιανοητέον, ὅσαι εἰσὶ τὰ νῦν ἡμῖν ἑστίαι διανεμηθεῖσαι τὸν ἀριθμόν, ταύτας δεῖν ἀεὶ τοσαύτας εἶναι καὶ μήτε τι πλείους γίγνεσθαι μήτε τί ποτε ἐλάττους. ὧδʼ οὖν ἂν τὸ τοιοῦτον βεβαίως γίγνοιτο περὶ πᾶσαν πόλιν· ὁ λαχὼν τὸν κλῆρον καταλειπέτω ἀεὶ ταύτης τῆς οἰκήσεως ἕνα μόνον κληρονόμον τῶν ἑαυτοῦ παίδων, ὃν ἂν αὐτῷ μάλιστα ᾖ φίλον, διάδοχον

and daemons. And in order that these things may remain in this state for ever, these further rules must be observed: the number of hearths, as now appointed by us, must remain unchanged, and must never become either more or less. This will be securely effected, in the case of every State, in the following way: the allotment-holder shall always leave behind him one son, whichever he pleases, as the inheritor of his dwelling, to be his successor in the tendance of the deified ancestors