时间不治愈伤口，只是掩盖它们。

当信息不对称或激励不一致时，市场就会失灵。

"When you are young, you think you can leave and never look back. But you always do."

The teacher's task is to awaken joy in creative expression and knowledge.

政策辩论应以严格的实证分析为基础。