I went to the woods because I wished to live deliberately. I wanted to live deep and suck out all the marrow of life, to put to rout all that was not life.
Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
不要等待机会，创造机会。
No one is an artist unless he carries his picture in his head before painting it.
"The books that the world calls immoral are books that show the world its own shame."
A company without vision is like a ship without a compass.