Persistence is key in mathematical research; many great results come from long struggles.
坚持是数学研究的关键,许多伟大的成果来自于长期的奋斗。
"The books that the world calls immoral are books that show the world its own shame."
We are all part of an unbroken chain of life.
没有什么比独立和自由更宝贵的了。