To me, fearless is not the absence of fear. It's not being completely unafraid. To me, fearless is having fears. Fearless is having doubts. Lots of them. To me, fearless is living in spite of those things that scare you to death.

Coal’s future depends on our ability to make it cleaner and more efficient.

孔子说：“譬如堆山，还差一筐，没堆成就停了，功亏一篑是自己造成的；譬如填坑，只倒一筐，继续填下去，坚持不懈是自己决定的。”

所有痛苦的根源是执着。

质量不是偶然；它是一种决定。