轧棉机的发明纯属偶然;那时我还很年轻,非常贫穷,对我来说从中实现一些价值是一个重要的目标。
The only thing that you absolutely have to know is the location of the library.
Success does not consist in never making mistakes but in never making the same one a second time.
The universe is not only stranger than we imagine, it is stranger than we can imagine.
Man is not by nature a social animal.