The core of the energy revolution is cleanliness and efficiency, and the coal industry must actively adapt to this trend.

经济学家最重要的技能是清晰地思考权衡取舍。

Happiness is rarely absent; it is we that know not of its presence.

计算复杂性的研究不仅仅是关于问题的分类；它是关于理解计算本身的本质。

"Writing is an act of courage, a defiance against the silence of the universe."

在哲学中，赛跑的胜利者是最后到达的人。

The most important thing is to be honest in your work. Honesty is the key to great acting.

适者生存。