"All existence makes me anxious, from the smallest fly to the mysteries of the Incarnation; the whole thing is inexplicable, I most of all; to me all existence is infected, I most of all. My distress i…"

"The greatest hazard of all, losing one's self, can occur very quietly in the world, as if it were nothing at all."

"Life can only be understood backwards; but it must be lived forwards."

"The most dreadful of all diseases is to be a nonentity."

"The most tremendous energy of which the world is capable is the spiritual energy of a man who is in despair."