人类最美丽和最丑陋的倾向都不是固定生物本性的一部分，而是创造人类的社会过程的结果。
The most beautiful as well as the most ugly inclinations of man are not part of a fixed biologically given nature, but result from the social process which creates man.
I’ve come to the conclusion that if someone doesn’t like me for being myself, it’s their loss.
We can’t ignore the economic role of coal, but we also can’t ignore its environmental impact.
The companies that thrive will be those that view environmental challenges as opportunities for reinvention.