Iliad 1.80–83
Calchas to Achilles in the Achaean assembly
κρείσσων γὰρ βασιλεὺς ὅτε χώσεται ἀνδρὶ χέρηϊ·
εἴ περ γάρ τε χόλον γε καὶ αὐτῆμαρ καταπέψῃ,
ἀλλά τε καὶ μετόπισθεν ἔχει κότον, ὄφρα τελέσσῃ,
ἐν στήθεσσιν ἑοῖσι· σὺ δὲ φράσαι εἴ με σαώσεις.
For a king is more powerful than the lesser man who incurs his anger.
Even if he swallows down his anger that very day,
still afterward he holds a grudge within his breast
until he carries it through. So consider whether you will keep me safe.