一个人的常数是另一个人的变量。
One man's constant is another man's variable.
Life is a melody, make it beautiful.
The mind is the organ of adaptation par excellence.
以耗尽地球为代价的利润根本不是利润。
The most considerable difference I can see between men and animals is not in reason, but in the extent of the power of using it.
最好的解决方案往往来自那些最接近问题的人——我们的农民。
质量从来不是偶然的；它始终是智慧努力的结果。
作家是由他的主题选择的——他的主题是他所处时代的意识。
The most exciting discoveries often come from looking at old problems in completely new ways.