"The past is never dead. It's not even past."

Move fast and break things. Unless you are breaking stuff, you are not moving fast enough.

If you're walking down the right path and you're willing to keep walking, eventually you'll make progress.

世界是一个非常复杂的地方，并不总是容易理解我们周围发生的事情。

Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.