艺术家必须像上帝在创造中一样存在于他的作品中，无形而全能；人们必须处处感受到他，但永远看不到他。

当一件事有趣时，探寻其中隐藏的真相。

将每个困难分解为尽可能多且必要的部分来解决它。

Lack of money is the root of all evil.

在数学科学中，比其他任何学科都更常见的是，那些一度最抽象、似乎远离一切实际应用的真理，在下一个时代会成为深刻物理研究的基础，并最终体现在某些实用发明中。

That's exhilarating if you're doing well, and very crushing if you're not. It leads, in the worst cases -- in the analysis of a sociologist like Emil Durkheim -- it leads to increased rates of suicide. There are more suicides in developed, individualistic countries than in any other part of the world. And some of the reason for that is that people take what happens to them extremely personally -- they own their success, but they also own their failure.