我们都在寻找某样东西，即使我们不知道它是什么。
We are all searching for something, even if we don't know what it is.
物理学和数学之间的界限并不像我们想象的那么清晰。
The spirit is the life that itself cuts through life.
我们都是欲望的囚徒，牢房的钥匙就在我们自己手中。
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.