世界上最伟大的事情是知道如何属于自己。
The greatest thing in the world is to know how to belong to oneself.
I think that one should recognize the reality even when one doesn't like it; indeed, especially when one doesn't like it.
The interplay between mathematics and physics has led to some of the most profound insights in science.
You are never too old to set another goal or to dream a new dream.
定理不是偶然发现的。