Investing in cleaner coal technologies is an investment in our future.
In times of change, the ability to learn is far more important than the ability to know.
唯一真正的天堂是我们已经失去的天堂。
写作不仅仅是一种职业;它是一种生活方式,对真理和美的承诺。
The earth's resources are finite, but human ingenuity is not.