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.

...the reason for [this age's] anxiety and unrest is because in one direction, 'truth' increases in scope and quantity - via science and technology - while in the other, certainty and confidence steadily decline. Our age is a master in developing truths while being wholly indifferent to certitude. It lacks confidence in the good.

You live life looking forward, you understand life looking backward.

When you were called, did you answer or did you not? Perhaps softly and in a whisper?

It is not a gain that guilt should be wholly forgotten. On the contrary, it is loss and perdition. But it is a gain to win an inner intensity of heart through a deeper and deeper inner sorrowing over guilt.

I feel as if I were a piece in a game of chess, when my opponent says of it: That piece cannot be moved.

I have attacked no one as not being a Christian, I have condemned no one.