I don’t like to be put in a box. I’m always trying to do something different.

对工人实际起作用的纪律是由他的顾客施加的。

科学不是形式逻辑；它和其他创造性艺术一样，需要思想的自由发挥。

真理就是在经验面前站得住脚的东西。

A book is a garden, an orchard, a storehouse, a party, a company by the way, a counselor, a multitude of counselors.

Science is simply common sense at its best—that is, rigidly accurate in observation, and merciless to fallacy in logic.  

The only thing that is impossible is the thing you don't try.

世界上充满了显而易见的事情，却没有人注意到。