每一个数学问题都是通向新理解世界的窗口。
Every mathematical problem is a window into a new world of understanding.
The poet's heart must be open to all the winds of heaven.
我不是没素材了，我只是没时间了。
A diploma is not necessarily can create a person, just as a prison may not be defeated every>
可持续性不再是可选项，而是我们前进的唯一道路。