我们都在寻找某样东西，但我们并不总是知道那是什么。
We are all searching for something, but we don't always know what it is.
You don't have to have a reason to love somebody.
永久胜利时见！
局部和全局现象之间的相互作用是数论中反复出现的主题。
The great advantage of old age is that you can be as rude as you like.