The more we realize our minuteness and our impotence in the face of cosmic forces, the more astonishing becomes what human beings have achieved.

你必须不断思考你能做些什么来让世界变得更美好。

我不是来完美的，我是来勇敢的。

Development economics is ultimately about improving people's lives.

最好的想法来自于合作和多样化的视角。