数学家的工作永无止境；总有更多的问题需要解决。
The act of writing is an act of optimism.
创新不仅仅是技术，更是改变人们的生活方式。
"A good book is an event in my life."
Guilt is like a bag of bricks. All you have to do is set it down.
The past is a foreign country; they do things differently there.
