你无法改变过去，但你可以塑造未来。
You can't change the past, but you can shape the future.
"Chance favors the prepared mind."
Believe in yourself, even when no one else does.
Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
那个时代，没有任何东西是拆包的，即使是人们脑子里的东西。每样东西不是储存着，就是在运送当中。