I am so fed up and joyless that not only have I nothing to fill my soul, I cannot even conceive of anything that could possibly satisfy it - alas, not even the bliss of heaven.

It is human self-renunciation when a man denies himself and the world opens up to him. But it is Christian self-renunciation when he denies himself and, because the world precisely for this shuts itself up to him, he must as one thrust out by the world seek God's confidence. The double-danger lies precisely in meeting opposition there where he had expected to find support, and he has to turn about twice; whereas the merely human self-resignation turns once.

Philosophy is life's dry-nurse, who can take care of us - but not suckle us.

What the philosophers have to say about reality is often as disappointing as a sign you see in a shop window, which reads Pressing Done Here. If you brought your clothes in to be pressed, you would be fooled: for the sign is only for sale.

It takes moral courage to grieve; it requires religious courage to rejoice.

Out of love for mankind, and out of despair at my embarrassing situation, seeing that I had accomplished nothing and was unable to make anything easier than it had already been made, and moved by a genuine interest in those who make everything easy, I conceived it as my task to create difficulties everywhere.

To venture causes anxiety. Not to venture is to lose oneself.