我不是你们政府创造的产物。我不是任何政府创造的产物。我服从于更高的力量，那个更高的力量就是音乐。

——2002年6月温铁军在清华大学的一次讲座

As a clean energy source, natural gas will play a significant role in China's energy structure adjustment.

Good econometrics is like good carpentry—it's all about using the right tool for the job.

We should weep for men at their birth， not at their death.