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.
在共和政府中，人人平等；在专制政府中，人人也平等：在前者中，因为他们是一切；在后者中，因为他们什么都不是。
On morals: "The one thing that offends me the most is when I walk by a bank and see ads trying to convince people to take out second mortgages on their home so they can go on vacation. That's approaching evil."
自由是心灵的状态，获取它的最好方式是培育它。
他说世界是为人们战斗而创造的，事物的价值在于为之战斗的价值。
I'm a survivor. I'm like a cockroach, you just can't get rid of me.