To do mathematics is to explore a universe of ideas, where the only limit is your imagination.
做数学就是探索一个思想的宇宙，唯一的限制是你的想象力。
我们曾许下这样的诺言：不作恶。我要让我的公司去做对用户、对顾客、对所有人有利的事情。所以，如果我们能坚守这个诺言，我们就能做出一番有益的成就。
The world is what it is; men who are nothing, who allow themselves to become nothing, have no place in it.
Hard work beats talent when talent doesn’t work hard.
You are not the opinion of somebody who doesn't know you.
The solution of a problem appears suddenly and is not approached by a gradual, step-by-step procedure.