The highest of all is not to understand the highest but to act upon it.

...a human being not only can choose but... he must choose... for in this way God retains His honor while at the same time has a fatherly concern for humankind. Though God has lowered Himself to being that which can be chosen, yet each person must on his part choose. God is not mocked. Therefore the matter stands thus: If a person avoids choosing, this is the same as the presumption of choosing the world.

...even the richest personality is nothing before he has chosen himself, and on the other hand even what one might call the poorest personality is everything when he has chosen himself; for the great thing is not to be this or that but to be oneself, and this everyone can be if he wills it.

To be a saint is to will the one thing.

What is a poet? An unhappy person who conceals profound anguish in his heart but whose lips are so formed that as sighs and cries pass over them they sound like beautiful music.

Life is lived forwards, but understood backwards.

The paradox is really the pathos of intellectual life and just as only great souls are exposed to passions it is only the great thinker who is exposed to what I call paradoxes, which are nothing else than grandiose thoughts in embryo.