随机评估可以帮助我们了解发展中哪些措施有效，哪些无效。
Randomized evaluations can help us understand what works and what doesn't in development.
在全球化经济中，文化差异是最大的挑战也是最大的机会。
We don't inherit the land from our ancestors; we borrow it from our children.
Train people well enough so they can leave, treat them well enough so they don't want to.
诗歌是心灵的语言。