[Warning, the following is or at least purports to be satire]
Lucian, A professor of public speaking, 17
“Don’t you read the classics either, not the babbling Isocrates or the charmless Demosthenes, or that boor Plato. Read instead the speeches from a little before our time, the work people call “opinion-pieces”, so that you may draw on them when you need to, as if you were taking something from the pantry.”
ἀλλὰ καὶ ἀναγίγνωσκε τὰ παλαιὰ μὲν μὴ σύ γε, μηδὲ εἴ τι ὁ λῆρος Ἰσοκράτης ἢ ὁ χαρίτων ἄμοιρος Δημοσθένης ἢ ὁ ψυχρὸς Πλάτων, ἀλλὰ τοὺς τῶν ὀλίγον πρὸ ἡμῶν λόγους καὶ ἅς φασι ταύτας μελέτας, ὡς ἔχῃς ἀπ᾿ ἐκείνων ἐπισιτισάμενος ἐν καιρῷ καταχρῆσθαι καθάπερ ἐκ ταμιείου προαιρῶν.