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.
Leadership means making tough decisions today that will benefit future generations.
I believe in living in the moment and making the most of every day.
The real hero is the one who knows how to live in peace, not in war.
我们每个人,每天都在进行创造自己的行为。
The pain is temporary, but the glory is forever.
The study of nature is a perpetual joy.