inexorablemente
From LSJ
αὐτάρκης ἔσῃ, ἂν μάθῃς τί τὸ καλὸν κἀγαθόν ἐστι → you will be contented with your lot if you learn what the honourable and good is
Spanish > Greek
ἀλιστάστως, ἀμειλιχίως, ἀπαραιτήτως, ἀπροσωπολήπτως, ἀσκελέως, ἀτρέπτως, ἀφειδῶς