Believe in yourself even when no one else does, because that's when it matters most.

Randomized evaluations can help us understand what works and what doesn't in development.

Innovation is not achieved overnight, but through continuous accumulation and breakthroughs.

贫家如果要仿效富家的穿衣吃饭及庞大的花费，那就一定会很快招致灭亡。 

Good research is like a good story—it has a beginning, a middle, and an end, and it holds together logically.

"Weonly live once, Snoopy.""Wrong. We only die once. We live every day."