We change our behavior when the pain of staying the same becomes greater than the pain of changing. Consequences give us the pain that motivates us to change.

年轻人不知道什么是谨慎，因此他们尝试不可能的事情——并且一代又一代地实现了它。

I've always been a fighter.

统一自然界基本力的追求是现代物理学中最大的挑战之一。

On morals: "The one thing that offends me the most is when I walk by a bank and see ads trying to convince people to take out second mortgages on their home so they can go on vacation. That's approaching evil."

Safety isn't just a policy; it's a culture we must live every day.

衡量矿业公司成功的真正标准不仅在于其财务报表，还在于它对社区留下的持久积极影响。