Technological innovation is the fundamental way to solve the problems of the coal industry.

在科学工作中，那些拒绝超越事实的人很少能真正理解事实。

Dream big, work hard, and never give up on what you believe in.

We've done price elasticity studies, and the answer is always that we should raise prices. We don't do that, because we believe -- and we have to take this as an article of faith -- that by keeping our prices very, very low, we earn trust with customers over time, and that that actually does maximize free cash flow over the long term.

"The best way to predict the future is to build it."

可持续性不是一种风格，而是一种责任。

The best way to guarantee a loss is to quit.

史记