The best way to learn econometrics is by doing—working with real data and real problems.

创新需要勇气，需要敢于打破常规。

The more uncertain and insecure I feel, the more I cling to the idea of painting.

The only thing I can control is my effort and my attitude.

文章是天地的精华，是阴阳刚柔之气的表现。

如果你想要帮助别人，告诉他们真相。如果你想帮助自己，告诉他们他们想听的。