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你不能僅僅因為情況不理想就放棄某人。

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.

On progress: "If you're competitor-focused， you have to wait until there is a competitor doing something. Being customer-focused allows you to be more pioneering."

"Nur wer die Gefahr besteht, geht in sich."

The weight of evidence for an extraordinary claim must be proportioned to its strangeness.