低头不是认输,是要看清自己的路。仰头不是骄傲,是看见自己的天空。

The opportunity does not go hand in hand, so when they come, you’d better hold them.

If you can keep your head when all about you are losing theirs and blaming it on you...

"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."

数学证明的优雅在于其简洁和清晰。