The beauty of mathematics is that it allows us to abstract away from the physical world and focus on the underlying principles.

Leadership is about making tough decisions and standing by them.

人类的本质在于不追求完美。

I don’t play tennis for money or fame. I play because I love it.

天下的道理，循环往复，所以能够永恒不息。

法律规则不仅仅是威胁支持的命令。