Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.

物理学的未来不在于发现新的粒子，而在于理解支配我们已经知道的粒子行为的更深层次的原则。

When you change the way you look at things, the things you look at change.

I never buy a stock unless I can see a clear path to a 50% return.