Plato, Meno 92b

δʼ ἔτι μᾶλλον οἱ τούτοις ἐπιτρέποντες, οἱ προσήκοντες, πολὺ δὲ μάλιστα πάντων αἱ πόλεις, ἐῶσαι αὐτοὺς εἰσαφικνεῖσθαι καὶ οὐκ ἐξελαύνουσαι, εἴτε τις ξένος ἐπιχειρεῖ τοιοῦτόν τι ποιεῖν εἴτε ἀστός. πότερον δέ, ὦ Ἄνυτε, ἠδίκηκέ τίς σε τῶν σοφιστῶν, ἢ τί οὕτως αὐτοῖς χαλεπὸς εἶ; οὐδὲ μὰ Δία ἔγωγε συγγέγονα πώποτε αὐτῶν οὐδενί, οὐδʼ ἂν ἄλλον ἐάσαιμι τῶν ἐμῶν οὐδένα. ἄπειρος ἄρʼ εἶ παντάπασι τῶν ἀνδρῶν; καὶ εἴην γε.

who let the young men have their way; and most of all the cities that allow them to enter, and do not expel them, whether such attempt be made by stranger or citizen. Tell me, Anytus, has any of the sophists wronged you? What makes you so hard on them? No, heaven knows I have never in my life had dealings with any of them, nor would I let any of my people have to do with them either. Then you have absolutely no experience of those persons?