我们很早就认识到，聪明人会做非常愚蠢的事情，我们想知道为什么，是谁，这样我们就能避免这些事情。
The basis of a democratic state is liberty.
Natural experiments can provide valuable insights into economic questions.
The most durable thing in writing is style, and style is the most valuable investment a writer can make with his time.
The development of science cannot be separated from innovation and cooperation.
自然是一个活生生的整体，而不是一个死的集合体。