成功的衡量标准不仅仅是利润，还包括积极的影响。

The power of human cognition comes from its ability to generalize.

Safety isn't just a policy, it's a culture that must be lived every day in our mines.

牺牲自由以换取安全（可指生活保障）的人，不配有自由和安全。

To kill an error is as good a service as, and sometimes even better than, the establishing of a new truth or fact.  

气候变化是本世纪的战斗，我们必须赢得胜利。