Plato, Laws 879b

μετὰ τοῦ δούλου. ὃς δʼ ἂν ἄκων ἄλλος ἄλλον τρώσῃ, τὸ βλάβος ἁπλοῦν ἀποτινέτω—τύχης γὰρ νομοθέτης οὐδεὶς ἱκανὸς ἄρχειν—δικασταὶ δὲ ὄντων οἵπερ τοῖς ἐκγόνοις πρὸς τοὺς γεννήτορας ἐρρήθησαν, καὶ τιμώντων τὴν ἀξίαν τῆς βλάβης.βίαια μὲν δὴ πάνθʼ ἡμῖν τὰ προειρημένα πάθη, βίαιον δὲ καὶ τὸ τῆς αἰκίας πᾶν γένος. ὧδε οὖν χρὴ περὶ τῶν τοιούτων πάντα ἄνδρα καὶ παῖδα καὶ γυναῖκα ἀεὶ διανοεῖσθαι, τὸ πρεσβύτερον ὡς οὐ σμικρῷ τοῦ νεωτέρου ἐστὶ πρεσβευόμενον

Whoever wounds another involuntarily shall pay a single equivalent for the damage (since no lawgiver is able to control fortune), and the judges shall be those designated to act in cases of the wounding of parents by children; and they shall assess the due proportion of damage payable. All the cases we have now dealt with are of suffering due to violence, and the whole class of cases of outrage involve violence. Regarding such cases, the view that should be held by everyone,—man, woman and child,—is this, that the older is greatly more revered than the younger, both among the gods and among those men who propose to keep safe and happy.