perspicientia
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
Latin > English (Lewis & Short)
perspĭcĭentĭa: ae, f. id.,
I a full perception or knowledge of a thing: veri, Cic. Off. 1, 5, 15.
Latin > French (Gaffiot 2016)
perspĭcĭentĭa,¹⁶ æ, f. (perspicio), vue claire [fig.], parfaite connaissance : Cic. Off. 1, 15.
