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.
"The most powerful tool in computer science is not the computer itself, but the human mind."
Knowledge is of no value unless you put it into practice.
Mathematics is the language with which God has written the universe.
太阳，温柔与生命的源泉，向狂喜的大地倾注炽热的爱。
建筑必须是对其社会价值观的活生生的见证。