我不是因为快乐而歌唱，而是因为歌唱而快乐。

But there is only one thing which gathers people into seditious commotion, and that is oppression.

The future of energy is low-carbon, and natural gas will play a vital transitional role.

"The role of business is to produce goods and services that people value more highly than their cost, and to do so while consuming as few resources as possible."