Wisdom loves the children of men, but she prefers those who come through foolishness to wisdom.

There is faith in every serious doubt, namely, the faith in the truth as such, even if the only truth we can express is our lack of truth.

Boredom is rage spread thin.

Loneliness can be conquered only by those who can bear solitude.

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.

Doubt is the necessary tool of knowledge.

Religion is the state of being grasped by an ultimate concern, a concern which qualifies all other concerns as preliminary and which itself contains the answer to the question of a meaning of our life.