Ὅτι οὐδὲν ἧττον τὰ αὐτὰ ποιήσουσι, κἂν σὺ διαρραγῇς → You may break your heart, but men will still go on as before
ἐμμονή, ἐνδελεχισμός, δυσαπαλλακτία, τὸ ἔμμονον, ἐνδελέχεια