自由民主的传播和世界经济的整合创造了一种情况,即大国不再愿意相互开战。
The very important thing you should have is patience.
The study of cognition requires both empirical and theoretical approaches.
Small changes in incentives can lead to large changes in behavior.
在一个不断试图让你成为别人的世界里做自己,是最伟大的成就。