没有一个明智的飞行员会忘记使用他的清单，无论他的才能和经验有多么出色。

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.

Mathematics is the language with which God has written the universe.

Great leaders don't create followers; they create more leaders.