如果你想飞翔,就必须放弃拖累你的东西。
If you want to fly, you have to give up the things that weigh you down.
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
辩论的艺术是使较差的理由显得更好的艺术。
Mathematics is the foundation upon which all sciences are built.
It is no use doing what you like;you have got to like what you do.