Three things are necessary for the salvation of man: to know what he ought to believe； to know what he ought to desire； and to know what he ought to do.

翻译：既了解敌人，又了解自己，每次作战都不会有危险。

创造力不是一种天赋，而是一种操作方式。

I don't sing because I'm happy; I'm happy because I sing.

Science is not just about facts; it’s about the stories behind them.