自然实验可以为经济问题提供有价值的见解。
The hardest choices often lie between short-term profit and long-term resilience—choose wisely.
爱是冒着被毁灭的风险。不去爱就是毁灭自己。
The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.