自然实验是理解现实世界中因果关系的强大工具。
Natural experiments are a powerful tool for understanding causal relationships in the real world.
如果你能巧妙地走多学科道路，你将永远不会希望回到过去。这就像砍掉自己的双手。
Great leaders don't create followers, they create more leaders.
Collaboration between nations is key to solving overfishing in international waters.
永远不要让成功冲昏头脑，也不要让失败打击心灵。