我们只是一个平凡星系中的一个渺小星球上的一种高等的猴子。但是我们却可以理解这个宇宙，这就是我们的独特之处。
We are just an advanced breed of monkeys on a minor planet of a very average star. But we can understand the Universe. That makes us something very special.
"The more you try to understand the shadow, the less you know."
Development economics is ultimately about improving people's lives.
我不追求目标、体系或倾向；我没有计划、风格或方向。
计算的目的是洞察，而不是数字。