我不认为每个人都应该成为数学家，但我确实相信许多学生没有给数学一个真正的机会。

当我们无法改变一种情况时，我们被挑战去改变自己。

The most powerful leadership tool you have is your own personal example.

Society can and does execute its own mandates， and if it issues wrong mandates instead of right， or any mandates at all in things with which it ought not to meddle， it practices a social tyranny more formidable than many kinds of political oppression， since， though not usually upheld by such extreme penalties， it leaves fewer means of escape， penetrating much more deeply into the details of life， and enslaving the soul itself.

领导力就是为你所带领的人带来清晰的方向。

不过是君主不把它［爱人利人］用在政事上,士大夫也不把它付诸行动罢了。