当我们发现保持不变比改变更痛苦时，我们就会改变自己的行为。后果给我们带来痛苦，激励我们去改变。
We change our behavior when the pain of staying the same becomes greater than the pain of changing. Consequences give us the pain that motivates us to change.
Speak confidently as if you are right， but listen carefully as if you are wrong.
政策辩论应以严格的实证分析为基础。
Mental processes exist because they serve a purpose.