Investing in clean coal technologies isn't an expense—it's an investment in our future.

The beauty of chemistry is that it's everywhere—you just have to look for it.

历史不会重复，但它会以不同的形式重现。

不要走在我后面；我可能不会引领。不要走在我前面；我可能不会跟随。只要走在我旁边，做我的朋友。