Plato, Laws 778a

ἐπίταξιν πᾶσαν γίγνεσθαι, μὴ προσπαίζοντας μηδαμῇ μηδαμῶς οἰκέταις, μήτʼ οὖν θηλείαις μήτε ἄρρεσιν, ἃ δὴ πρὸς δούλους φιλοῦσι πολλοὶ σφόδρα ἀνοήτως θρύπτοντες χαλεπώτερον ἀπεργάζεσθαι τὸν βίον ἐκείνοις τε ἄρχεσθαι καὶ ἑαυτοῖς ἄρχειν. ὀρθῶς λέγεις. οὐκοῦν ὅτε τις οἰκέταις κατεσκευασμένος εἰς δύναμιν εἴη πλήθει καὶ ἐπιτηδειότητι πρὸς ἑκάστας τὰς τῶν ἔργων παραβοηθείας, τὸ δὴ μετὰ τοῦτο οἰκήσεις χρὴ διαγράφειν τῷ λόγῳ; πάνυ μὲν οὖν.

with servants, either male or female, for by a course of excessively foolish indulgence in their treatment of their slaves, masters often make life harder both for themselves, as rulers, and for their slaves, as subject to rule. That is true. Suppose, then, that we are now, to the best of our power, provided with servants sufficient in number and quality to assist in every kind of task, should we not, in the next place, describe our dwellings? Most certainly.