Plato, Laws 627c

καὶ μάλα ἄτοπον, ὦ ξένε, τὸ νῦν λεγόμενον· ὅμως δὲ ὁμολογεῖν οὕτως ἀναγκαιότατον. ἔχε δή. καὶ τόδε πάλιν ἐπισκεψώμεθα· πολλοὶ ἀδελφοί που γένοιντʼ ἂν ἑνὸς ἀνδρός τε καὶ μιᾶς ὑεῖς, καὶ δὴ καὶ θαυμαστὸν οὐδὲν τοὺς πλείους μὲν ἀδίκους αὐτῶν γίγνεσθαι, τοὺς δὲ ἐλάττους δικαίους. οὐ γὰρ οὖν. καὶ οὐκ ἂν εἴη γε πρέπον ἐμοί τε καὶ ὑμῖν τοῦτο θηρεύειν, ὅτι νικώντων μὲν τῶν πονηρῶν ἥ τε οἰκία καὶ ἡ συγγένεια αὕτη πᾶσα ἥττων αὑτῆς λέγοιτʼ ἄν, κρείττων δὲ

This statement is indeed most extraordinary, Stranger; none the less we cannot possibly reject it. Stay a moment: here too is a case we must further consider. Suppose there were a number of brothers, all sons of the same parents, it would not be at all surprising if most of them were unjust and but few just. It would not. And, moreover, it would ill beseem you and me to go a-chasing after this form of expression, that if the bad ones conquered the whole of this family and house should be called self-inferior,