Plato, Menexenus 238c-d
Socrates on democracy:
καλεῖ δὲ ὁ μὲν αὐτὴν δημοκρατίαν, ὁ δὲ ἄλλο, ᾧ ἂν χαίρῃ, ἔστι δὲ τῇ ἀληθείᾳ μετ’ εὐδοξίας πλήθους ἀριστοκρατία. βασιλῆς μὲν γὰρ ἀεὶ ἡμῖν εἰσιν· οὗτοι δὲ τοτὲ μὲν ἐκ γένους, τοτὲ δὲ αἱρετοί.
One man calls it ‘democracy’, but another calls it something else, as the fancy takes him. In truth it is an aristocracy supported by the approval of the public. For we always have kings; at one time they are so by heredity, at another time by election.