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.

如果不衡量影响，我们只是在猜测可持续性。

写作是一种自由的行为，是表达无法表达之物的方式。

市场是所有参与者集体情绪的反映。