Coal keeps America competitive in the world.

我相信教育改变世界的力量。

一个人越是激进，就越能完全地进入现实，从而更好地了解它，进而改变它。

我唯一上瘾的就是赢。

The love for all living creatures is the most noble attribute of man.  

Efficiency without sustainability is just short-term profit disguised as progress.

A good system design is one that makes it easy to do the right thing and hard to do the wrong thing.

我们都面临着一系列被巧妙地伪装成不可能情况的伟大机会。