The stock market is filled with individuals who know the price of everything, but the value of nothing.
模型的目的是足够简单以便理解和使用,但又足够复杂以捕捉系统的基本特征。
The art of the novel is to make the reader forget that the writer exists.
My scientific studies have afforded me great satisfaction; and I am convinced that it will not be long before the whole world acknowledges the results of my work.