Persistence is key in mathematical research; many great results come from looking at the same problem from different angles over and over again.
在数学研究中，坚持是关键；许多伟大的成果来自于一遍又一遍地从不同角度看待同一个问题。
"A good story should make you laugh and cry in equal measure."
睡在哪里不都是睡在夜里。
The past is never dead. It's not even past.
爱着的心才是真正活着的心。
"Life is a series of choices, and the ones you don't make are just as important as the ones you do."
有时候问题很复杂，但答案却很简单。