Laudator Temporis Acti

Aristophanes, Wealth 567-570 (tr. Stephen Halliwell):

Consider, then, all over Greece, the ways of politicians.
While poverty is all they have, they treat their cities justly.
Yet once they’ve filched the public funds, their justice disappears:
They plot against the masses then and try to harm the people.

σκέψαι τοίνυν ἐν ταῖς πόλεσιν τοὺς ῥήτορας, ὡς ὁπόταν μὲν
ὦσι πένητες, περὶ τὸν δῆμον καὶ τὴν πόλιν εἰσὶ δίκαιοι,
πλουτήσαντες δ' ἀπὸ τῶν κοινῶν παραχρῆμ' ἄδικοι γεγένηνται,
ἐπιβουλεύουσί τε τῷ πλήθει καὶ τῷ δήμῳ πολεμοῦσιν.

Alan H. Sommerstein ad loc. compares Lysias 28.6-7:

As soon as they had had their fill and regaled themselves on your property, they came to regard themselves as not being part of the Athenian community. Once they get rich, they hate you, and make plans to be no longer your servants but your rulers; fearing for their ill-gotten gains, they are ready to occupy strongholds, establish an oligarchy, and do everything to put you in a state of the utmost danger day after day.

οὕτως, ὦ ἄνδρες Ἀθηναῖοι, ἐπειδὴ τάχιστα ἐνεπέπληντο καὶ τῶν ὑμετέρων ἀπέλαυσαν, ἀλλοτρίους τῆς πόλεως αὑτοὺς ἡγήσαντο. ἅμα γὰρ πλουτοῦσι καὶ ὑμᾶς μισοῦσι, καὶ οὐκέτι ὡς ἀρξόμενοι παρασκευάζονται ἀλλ᾽ ὡς ὑμῶν ἄρξοντες, καὶ δεδιότες ὑπὲρ ὧν ἀφῄρηνται ἕτοιμοί εἰσι καὶ χωρία καταλαμβάνειν καὶ ὀλιγαρχίαν καθιστάναι καὶ πάντα πράττειν ὅπως ὑμεῖς ἐν τοῖς δεινοτάτοις κινδύνοις καθ᾽ ἑκάστην ἡμέραν ἔσεσθε.