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 a page."
All happiness depends on courage and work.
You have to be willing to be misunderstood if you are going to innovate.
解释：对于一件事情的利害得失，只有有智慧的人才能分辨清楚。
I like crossing the imaginary boundaries people set up between different fields—it's very refreshing.
