世界可能很刻薄,但人们不必如此。
The world might be mean, but people don't have to be.
我从不认为任何事情是理所当然的。
Randomized evaluations can help us understand what works and what doesn't in development.
这些高墙还真是有点意思。一开始你恨它,然后你对它就习惯了。等相当的时间过去后,你还会依赖它。
Justice delayed is justice denied.