真理是人类精神的自由创造,如果我们自己不产生它,它就永远不会存在。
Man is the measure of all things.
宇宙不仅比我们想象的更奇怪,而且比我们能够想象的更奇怪。
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.