The world needs reliable energy, and coal still plays a critical role in providing it.

改变的秘诀是将你所有的精力集中在建设新事物上，而不是与旧事物斗争。

Sustainability in mining isn't an option—it's a responsibility we owe to future generations.

真正的孤独不是一个人独处，而是在人群中依然感到孤独。

I don't believe in guilty pleasures - if you enjoy something, enjoy it.

The probability of a response is determined by its reinforcement history.

创新不仅仅是关于新想法，而是让它们发挥作用。