From the Colloquia Monacensia-Einsidlensia, a teaching text dating from the early 3rd century CE (slightly edited):
Ἀγαθῇ τύχῃ, εὐτυχῶς. ὀρῶ πολλοὺς ἐπιθυμοῦντας Ῥωμαιστὶ διαλέγεσθαι καὶ Ἑλληνιστὶ μἠτε εὐχερῶς δύνασθαι διἀ τὴν δυσχέρειαν καὶ πολυπλήθειαν τῶν ῥημάτων…
And the Latin:
Bona fortuna, feliciter. Video multos cupientes Latine disputare et Graece, neque facile posse propter difficultatem et multitudinem verborum…
Nice to know that the sentiment extends all the way back to antiquity!