Self-education is, I firmly believe, the only kind of education there is.

Quality in materials reflects quality in character.

技术变革不是外生的；它是人们对市场激励做出反应而采取的有意行动的结果。

The future of energy lies in a diversified mix that includes both traditional and renewable sources.

如果我们不考虑长期影响，开采效率就毫无意义。

所以,即使做很困难的事情,也一定能够达到目的,没听说过想达到自己的愿望,而能回避困难的。