气候科学不是关于信仰 - 而是关于证据和严格的测试。

可持续发展不是口号，而是必须践行的企业责任。

I will tell you what I will do and what I will not do. I will not serve that in which I no longer believe, whether it call itself my home, my fatherland, or my church: and I will try to express myself in some mode of life or art as freely as I can and as wholly as I can, using for my defence the only arms I allow myself to use—silence, exile, and cunning.

我不必是人类才能知道关心的意义。