学习数学的唯一方法就是做数学。
Development economics is ultimately about improving people's lives.
We believe that we need to own and control the primary technologies behind the products we make.
最后,正如丘吉尔指出的那样,你总是可以指望美国人做正确的事情,但只有在他们尝试了其他一切之后。
The best way to predict the future is to create it.