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.
没有真理，只有感知。
人生最幸福的事，就是做自己喜欢做的事。
Leadership is about inspiring others to see possibilities where they once saw obstacles.
目标，无论是否达到，都使生命伟大。