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.

奈奎斯特准则提供了一种图形方法来确定闭环系统的稳定性。

成名最棒的部分就是能见到其他名人。

发现可能性的唯一方法是超越它们进入不可能。