世界是一本书，不旅行的人只读了一页。
"The world is a book, and those who do not travel read only one page."
The great secret that all old people share is that you really haven't changed in seventy or eighty years. Your body changes, but you don't change at all.
我不会花时间高谈阔论那些高概念的东西；我花时间解决工程和制造问题。
我们必须投资未来，而不仅仅是开发现在。
纯数学在某种程度上是逻辑思想的诗歌。