Leadership means making tough decisions today that will benefit everyone tomorrow.

挑战在于让不可能的事物看起来可信。

安全不仅仅是一项政策，而是我们矿山每天必须践行的一种文化。

My job is not to be easy on people.My job is to take these great people we have and to push them and make them even better.

投资者的主要问题——甚至是他最大的敌人——很可能是他自己。

宇宙的扭曲面——黑洞、虫洞、奇点和时间扭曲——才是真正的精彩所在。