To study the meaning of man and of life — I am making significant progress here. I have faith in myself. Man is a mystery: if you spend your entire life trying to puzzle it out, then do not say that you have wasted your time. I occupy myself with this mystery, because I want to be a man.

Oh I've plenty of time, my time is entirely my own.

... the more I learned, the more conscious did I become of the fact that I was ridiculous. So that for me my years of hard work at the university seem in the end to have existed for the sole purpose of demonstrating and proving to me, the more deeply engrossed I became in my studies, that I was an utterly absurd person

The soul is healed by being with children.

Being in love doesn't mean loving.

Two and two make four. Nature doesn't ask your advice. She isn't interested in your preferences or whether or not you approve of her laws. You must accept nature as she is with all the consequences that that implies.

If you happen to have a wart on your nose or forehead, you cannot help imagining that no one in the world has anything else to do but stare at your wart, laugh at it, and condemn you for it, even though you have discovered America.