The most important political challenge of our time is to create strong, effective, and accountable states.

The most difficult thing in life is to know yourself.

我们必须与政府、行业和社区合作，寻找可持续的能源解决方案。

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

书籍是最安静且最恒久的朋友。