οἱ τοῖς πέλας ἐπιβουλεύοντες, λανθάνουσι πολλὰκις ὑφ' ἑτέρων τοῦτ' αὐτὸ πάσχοντες → when people plot against their neighbours, they fall victim to the same sort of plot themselves
προὔπεμψα: ἀντὶ προέπεμψα, Ὄμηρ.
ao. de προπέμπω.
