σοφόν γάρ ἕν βούλευμα τάς πολλάς χεῖρας νικᾶ, σὺν ὄχλῳ δ' ἀμαθία μεῖζον κακό → better than many hands is one wise thought, a multitude of fools makes folly worse
omnĭa, um, n. pl., v. omnis.
omnia ADV :: in all respects
