Laudator Temporis Acti

Lucian, Demonax 14 (tr. A.M. Harmon, with his notes):

When the Sidonian sophist¹ was once showing his powers at Athens, and was voicing his own praise to the effect that he was acquainted with all philosophy—but I may as well cite his very words: "If Aristotle calls me to the Lyceum, I shall go with him; if Plato calls me to the Academy, I shall come; if Zeno calls, I shall spend my time in the Stoa; if Pythagoras calls, I shall hold my tongue."² Well, Demonax arose in the midst of the audience and said: "Ho" (addressing him by name), "Pythagoras is calling you!"

¹Otherwise unknown.
² Alluding to the Pythagorean vow of silence.

Τοῦ δὲ Σιδωνίου ποτὲ σοφιστοῦ Ἀθήνησιν εὐδοκιμοῦντος καὶ λέγοντος ὑπὲρ αὑτοῦ ἔπαινόν τινα τοιοῦτον, ὅτι πάσης φιλοσοφίας πεπείραται—οὐ χεῖρον δὲ αὐτὰ εἰπεῖν ἃ ἔλεγεν· Ἐὰν Ἀριστοτέλης με καλῇ ἐπὶ τὸ Λύκειον, ἕψομαι· ἂν Πλάτων ἐπὶ τὴν Ἀκαδημίαν, ἀφίξομαι· ἂν Ζήνων, ἐν τῇ Ποικίλῃ διατρίψω· ἂν Πυθαγόρας καλῇ, σιωπήσομαι. ἀναστὰς οὖν ἐκ μέσων τῶν ἀκροωμένων, Οὗτος, ἔφη προσειπὼν τὸ ὄνομα, καλεῖ σε Πυθαγόρας.

For some reason this reminds me of Pliny, Letters 6.15.2 (tr. Betty Radice):

[Passennius] Paulus was giving a public reading and began by saying "You bid me, Priscus———" at which Javolenus Priscus, who was present as a great friend of Paulus, exclaimed "Indeed I don't!" You can imagine the laughter and witticisms which greeted this remark.

Is cum recitaret, ita coepit dicere: 'Prisce, iubes…'. Ad hoc Iavolenus Priscus (aderat enim ut Paulo amicissimus): 'Ego vero non iubeo.' Cogita qui risus hominum, qui ioci.