The only way to learn mathematics is to do mathematics.
Art is not a mirror to reflect the world, but a hammer with which to shape it.
如果你能夢想，你就能實(shí)現(xiàn)它。
你不能只問顧客要什么，然后想法子給他們做什么。等你做出來，他們已經(jīng)另有新歡了。