In business, you have to be willing to take risks, but they must be calculated risks.

There's nothing more American than a coal miner.

To be happy is to be able to become aware of oneself without fright.

做出伟大工作的唯一途径是热爱你所做的事。

没有食物，人类最多只能活几个星期；没有它，社会正义的所有其他组成部分都毫无意义。