Knowledge of that which concerns us infinitely is possible only in an attitude of infinite concern.

The abundance of a grateful heart gives honor to God even if it does not turn to Him in words. An unbeliever who is filled with thanks for his very being has ceased to be an unbeliever.

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.

The vitality that can stand the abyss of meaninglessness is aware of a hidden meaning within the destruction of meaning.

One cannot be strong without love. For love is not an irrelevant emotion; it is the blood of life.

The basic anxiety, the anxiety of a finite being about the threat of non-being, cannot be eliminated. It belongs to existence itself.

All things and all people, so to speak, call on us with small or loud voices. They want us to listen. They want us to understand their intrinsic claims, their justice of being. But we can give it to them only through the love that listens.