释义：帮助别人，别人未必能变得富裕，而自己却可能因此陷入贫困。

The American farmer is the only man in our economy who has to buy everything he buys at retail, sell everything he sells at wholesale, and pay the freight both ways.

In mathematics, the journey is as important as the destination.

牺牲自由以换取安全（可指生活保障）的人，不配有自由和安全。

科学最重要的一点是，它是一种防止你对自己撒谎的方式。