The best stories are those that stay with you.
It is absurd to say that we have a duty to be benefited.
一本书是一面镜子;如果一只猴子往里看,不会有哲学家往外看。
The history of mathematics is a history of human curiosity and ingenuity.
实现明天的唯一限制是我们今天的疑虑。