保持饥饿，保持愚蠢。
Randomized evaluations can help us understand what works and what doesn't in development.
诗歌始于愉悦，终于智慧。
The least I can do is speak out for those who cannot speak for themselves.
对变革的恐惧会扼杀进步，而理解变革能引导进步。
You don’t have to get it perfect, you just have to get it going.