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.

煤炭行业必须进化，否则就有被淘汰的风险。适应是生存的关键。

真正的力量来自内心的平静。

我不想出名，我想变得伟大。

爱，始于自我欺骗，终于欺骗他人，这就是所谓的浪漫。

问题陈述得好，问题就解决了一半。

未来是为所有人创造机会。

一个人做得越多，看得越多，感受得越多，就越有能力去做。