λέλειμμαι τῶν ἐν Ἕλλησιν νόμων
From LSJ
ὁ δὲ πείσεται εἰς ἀγαθόν περ → he will obey you to his profit, he will obey you for his own good end
English > Greek (Woodhouse Quotes Reversed)
I am backward in the customs of the Greeks, I am not versed in the customs of Greece