νοεῖν γάρ ἐστι κρεῖττον καὶ σιγὴν ἔχειν → it's better, you see, to understand and yet say nothing (Menander)
instilar τοῦτο ἐγχύμα διὰ στόματος Hippiatr.Cant.2.4, cf. 5.
