Plato, Laws 880b

ἑτοίμως νόμον· ἐάν τις τύπτῃ τὸν πρεσβύτερον εἴκοσιν ἔτεσιν ἢ πλείοσιν ἑαυτοῦ, πρῶτον μὲν ὁ προστυγχάνων, ἐὰν μὴ ἧλιξ μηδὲ νεώτερος ᾖ τῶν μαχομένων, διειργέτω ἢ κακὸς ἔστω κατὰ νόμον· ἐὰν δὲ ἐν τῇ τοῦ πληγέντος ἡλικίᾳ ἢ ἔτι νεώτερος, ἀμυνέτω ὡς ἀδελφῷ ἢ πατρὶ ἢ ἔτι ἀνωτέρω τῷ ἀδικουμένῳ. πρὸς δʼ ἔτι δίκην ὑπεχέτω τῆς αἰκίας ὁ τὸν πρεσβύτερον, ὡς εἴρηται, τολμήσας τύπτειν, καὶ ἐὰν ὄφλῃ

to a law to this effect:—If anyone beats a person who is twenty or more years older than himself, in the first place, whoever comes upon them, if he be neither of equal age nor younger, shall try to separate them, or else be held to be a coward in the eyes of the law; and if he be of a like age with the man assaulted or still younger, he shall defend him who is wronged as he would a brother or a father or a still older progenitor. Further, he that dares to strike the older man in the way described shall be liable also to an action for outrage, and if he be convicted,