恐惧是心灵的杀手。
你眼中的碎片是最好的放大镜。
What we know is little, and what we are ignorant of is immense.
The biggest risk is not taking any risk.
The spread of liberal democracy around the world is not inevitable, but it is the most likely outcome given the alternatives.
当随机化不可行时，匹配方法可以是一个强大的工具。
Collaboration is key to solving the complex energy challenges we face today.