领导力就是激励人们去做他们从未想过自己能做的事情。

善行本身就是一种幸福的行为。

做数学就是同时参与创造和发现的行为。

The harder the battle, the sweeter the victory.

任何牺牲基本自由以换取短暂安全的人，最后既得不到安全也得不到自由。

War is an ugly thing， but not the ugliest of things: the decayed and degraded state of moral and patriotic feeling which thinks that nothing is worth a war， is much worse.