δίκην αἱρεῖν
From LSJ
κρεῖττον εἶναι φιλοσόφως ἀποθανεῖν ἢ ἀφιλοσόφως ζῆν → that it is better to die in manner befitting a philosopher than to live unphilosophically
Greek > English (Woodhouse)
secure a conviction, secure a verdict, win a case, win one's case