Randomized evaluations can help us understand what works and what doesn't in development.
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。
过去解释现在——这是进化心理学的基本前提。
Sometimes the simplest melodies are the hardest to write.
Quality fruit starts with quality soil - we must care for the foundation of all growth.
透明度和问责制必须成为能源公司运营的核心。
It is to the credit of human nature, that, except where its selfishness is brought into play, it loves more readily than it hates.