"世界是一座监狱，而监狱是一场梦。"

A mathematician is a person who can find analogies between theorems; a better mathematician is one who can see analogies between proofs and the best mathematician can notice analogies between theories.

What we call National-Socialism is the poisonous perversion of German ideas.

I think it's rarely about what you actually learn in class. It's mostly about the way that you look at things.

The true measure of a forest's worth isn't in board feet of timber, but in centuries of ecological balance.

你的工作将占据生活的一大部分，真正满意的唯一方法是做你认为伟大的工作。