人民是根，人民是基础，人民是力量的源泉。

The best economic research is often interdisciplinary.

I'm grateful for everything in my life.

我时刻准备着学习，但是我不喜欢别人给我上课。

Every lock has a key, every problem has a solution.

In mathematics, the art of proposing a question must be held of higher value than solving it.

生活中最大的荣耀不在于从不跌倒，而在于每次跌倒后都能爬起来。