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
liable to give account: P. and V. ὑπεύθυνος, P. ὑπαίτιος, ὑπόλογος, ἔνοχος.
the cause of: P. and V. αἴτιος (gen.); see liable.
