数学的本质在于它的自由。
The essence of mathematics lies in its freedom.
I know how much work it takes to get to the top, but even more to stay there.
With a library you are free, not confined by temporary political climates. It is the most democratic of institutions because no one - but no one at all - can tell you what to read and when and how.
流放不仅仅是一个地理概念。你可以在自己的祖国、自己的家里、一个房间里成为流放者。
买本家乡或区域的最新版旅游指南。像游客一样去了解（熟悉的环境）信息，你会学到很多东西。
高尚的名望声誉，在屈辱中彰明；宏大的道德雅量，在隐中发扬。
Every new day is another chance to change your life.