要理解现在，我们必须倾听过去的声音。

"The world is a book, and those who do not travel read only a page."

I have already carried out my duty. I have proved the Poincaré conjecture and I have nothing more to do in mathematics.

风格中最伟大的事情是掌握隐喻。

【释义】黄金没有（不容易）造假，阿魏无真（容易造假）。

人是存在的牧者。