"你越是试图理解镜子，就越少知道。"

世界充满奥秘，而这正是它的美。

Development economics is ultimately about improving people's lives.

The opening up of new markets, foreign or domestic, and the organizational development from the craft shop and factory to such concerns as U.S. Steel illustrate the same process of industrial mutation—if I may use that biological term—that incessantly revolutionizes the economic structure from within, incessantly destroying the old one, incessantly creating a new one.