λίθοι σιδήρῳ πρὸς ἀλλήλους τὰ ἔξωθεν καὶ μολύβδῳ δεδεμένοι
From LSJ
Ἐκ τῶν πόνων τοι τἀγάθ' αὔξεται βροτοῖς → Crescunt labore cuncta bona mortalibus → Das Gute wächst den Sterblichen aus ihrem Müh'n
English > Greek (Woodhouse Quotes Reversed)
stones fastened together by clamps on the outside and by lead