如果一个人只希望幸福，这很容易实现；但我们希望比别人更幸福，这总是困难的，因为我们相信别人比他们实际更幸福。
If one only wished to be happy, this could be easily accomplished; but we wish to be happier than other people, and this is always difficult, for we believe others to be happier than they are.
The American dream is powered by American energy.
"Time doesn’t heal. It just makes the hurt familiar."
Development economics is ultimately about improving people's lives.
There are no sunset industries, only sunset thinking.
I don't need a reason to be bold.
量子力学不仅是一种理论，而且是一种关于自然的新思维方式。