Out of the element of participation follows the certainty of faith; out of the element of separation follows the doubt in faith. And each is essential for the nature of faith. Sometimes certainty conquers doubt, but it cannot eliminate doubt. The conquered of today may become the conqueror of tomorrow. Sometimes doubt conquers faith, but it still contains faith. Otherwise it would be indifference.

He who risks and fails can be forgiven. He who never risks and never fails is a failure in his whole being.

...history has shown that the most terrible crimes against love have been committed in the name of fanatically defended doctrines.

Forgiving presupposes remembering.

We have to build a better man before we can build a better society.

I hope for the day when everyone can speak again of God without embarrassment.

Anxiety may consist of the loss of psychological or spiritual meaning which is identified with one's existence as a self, i.e., the threat of meaninglessness.