My day passes between logic, whistling, going for walks, and being depressed. I wish to God that I were more intelligent and everything would finally become clear to me - or else that I needn't live much longer.

Logic is not a body of doctrine, but a mirror-image of the world. Logic is transcendental.

Just be indipendent of the external world, so you don't have to fear for what's in it.

The Christian religion is only for one who needs infinite help, therefore only for one who feels an infinite need. The whole planet cannot be in greater anguish than a single soul. The Christian faith - as I view it - is the refuge in this ultimate anguish. To whom it is given in this anguish to open his heart, instead of contracting it, accepts the means of salvation in his heart.

You can't think decently if you're not willing to hurt yourself

Suppose someone follows the series "1,3,5,7, ..", and in writing the series 2x+1; and he asked himself "But am I always doing the same thing, or something different every time?" If from one day to the next someone promises: "Tomorrow I will give up smoking", does he say the same thing every day, or every day something different?

The fact that we can describe the motions of the world using Newtonian mechanics tell us nothing about the world. The fact that we do, does tell us something about the world.