历史的地理枢纽是世界上从政治战略角度看最重要的区域。
The best way to learn econometrics is by doing—working with real data and real problems.
你不能戴着丝绒手套搞革命。
The best way to learn a new programming language is by writing programs in it.
穷人常常被迫做出没有人应该做出的选择。
"To love at all is to be vulnerable."