... He must not see nothing at all, nor must he see sufficient for him… — Pensées
SAPIR 861
... He must not see nothing at all, nor must he see sufficient for him to believe he possesses it; but he must see enough to know that he has lost it. For to know of his loss, he must see and not see; and that is exactly the state in which he naturally is.
Open Scriptures Hebrew Bible (WLC), CC BY 4.0