城市是一所学校，它的建筑是老师。
The city is a school, and its buildings are the teachers.
I’m not a guy that’s going to let my love for the commitment down.
The pursuit of mathematical knowledge is a journey that never ends; there is always more to discover and understand.
Natural experiments are a powerful tool for understanding causal relationships in the real world.
没有遗忘，生活是完全不可能的。
人生之所以美丽，是因为它不会总是如你所愿。