The deepest theorems often have the simplest proofs - if you look at them from the right angle.
Innovation is not from nothing to something, but from something to better.
在上帝面前,我们都一样聪明——也都一样愚蠢。
文明的分布很大程度上是气候刺激的结果。
The land never lies, it repays what you put in.
The greatest blessing of our democracy is freedom. But in the last analysis, our only freedom is the freedom to discipline ourselves.