οὐκ ἔστι λέουσι καὶ ἀνδράσιν ὅρκια πιστά
From LSJ
πολλὰ δ' ἄναντα κάταντα πάραντά τε δόχμιά τ' ἦλθον → and ever upward, downward, sideward, and aslant they went
Greek to English
there are no pacts between lions and men, between lions and men there are no oaths of faith, there can be no covenants between men and lions (Homer, Iliad 22.262)
Italian
non esistono giuramenti fedeli fra leoni e uomini
Modern Greek
λεοντάρια και άνθρωποι ποτέ δεν όμοσαν ειρήνην / δεν υπάρχουν συμφωνίες μεταξύ λεόντων και ανδρών
