It is the duty of the human understanding to understand that there are things which it cannot understand, and what those things are. Human understanding has vulgarly occupied itself with nothing but understanding, but if it would only take the trouble to understand itself at the same time it would simply have to posit the paradox.

Humor (is) intrinsitc to Christianity.

Death cannot explain itself. The earnestness consists precisely in this, that the observer must explain it to himself.

The meaning lies in the appropriation.

to have faith is precisely to lose one's mind so as to win God.

The truth is a trap: you cannot get it without it getting you; you cannot get the truth by capturing it, only by its capturing you.

...it is not the obscure passages in Scripture that bind you but the ones you understand. With these you are to comply at once. If you understood only one passage in all of Scripture, well, then you must do that first of all. It will be this passage God asks you about. Do not first sit down and ponder the obscure passages. God's Word is given in order that you shall act according to it, not that you gain expertise in interpreting it.