释义：从五个方面分析形势：政治、天时、地利、将领、法制。

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.

"The truth may set you free, but first it will break you."

"The only true wisdom is in knowing you know nothing."

在追求数学真理的过程中，我们常常发现更多的问题而非答案。