δοκεῖν
From LSJ
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
Greek > English (Woodhouse Verbs Reversed)
(see also δοκέω): anticipate, seem, think, be considered, be deemed, be esteemed, be held, be reputed, be thought, considered, dream that, look forward to