U.S. energy independence doesn't mean isolation - we're still part of global markets.

I don't think that you have any insight whatsoever into your capacity for good until you have some well-developed insight into your capacity for evil.

我喜欢把大自然想象成一个无限的广播站，通过它上帝每小时都在对我们说话，只要我们愿意调谐。

我就是我自己。

可持续林业不仅仅是砍伐树木，更是培育文明。