世界需要科学,科学也需要世界。
The art of teaching is the art of assisting discovery.
过去是一个异国,他们在那里做事的方式不同。
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.