Faith which does not doubt is dead faith.

Life is doubt, and faith without doubt is nothing but death.

Cure yourself of the affliction of caring how you appear to others. Concern yourself only with how you appear before God, concern yourself only with the idea that God may have of you.

A lot of good arguments are spoiled by some fool who knows what he is talking about.

There is no true love save in suffering, and in this world we have to choose either love, which is suffering, or happiness. Man is the more man - that is, the more divine - the greater his capacity for suffering, or rather, for anguish.