质量永远不能妥协,因为声誉是一辈子建立的,但可能在一瞬间失去。
Only a life lived for others is a life worthwhile.
改变的秘诀是将你所有的精力集中在建设新事物上,而不是与旧事物斗争。
The P versus NP problem is one of the most important unsolved problems in computer science.