The world is what it is; men who are nothing, who allow themselves to become nothing, have no place in it.

我不是英雄，我只是一个普通人。

It is a common experience that a problem difficult at night is resolved in the morning after the committee of sleep has worked on it.

The most exciting discoveries often come from unexpected places.

一本书是一扇门，每个读者都以不同的方式穿过它。