黑夜原是为爱而生，白昼转眼就会回来。

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.

尽可能及时地向供应商、工人、承包商结款。他们下次会不遗余力地优先服务你。

The most rewarding part of science is seeing your work help others.