Ὅτι οὐδὲν ἧττον τὰ αὐτὰ ποιήσουσι, κἂν σὺ διαρραγῇς → You may break your heart, but men will still go on as before
Ar. and P. γλίσχρως.
importunately: P. λιπαρῶς (Plato).
obstinately: Ar. and P. αὐθάδως.