οὐκ ἂν λάβοις παρὰ τοῦ μὴ ἔχοντος → you can't take from one who doesn't have, you can't squeeze blood out of a turnip, you can't get blood out of a turnip, you can't get blood from a stone, you can't get blood out of a stone
Ἀλκάθους, -ου, ὁ.
Alcăthŏus: i, m., = Ἀλκάθοος,
I son of Pelops, founder of Megara, which was hence called Alcathoi urbs, Ov. M. 8, 8.
