对一个人而言，只要谨慎自信 ，没有什么是高不可攀的。
The only limit to our realization of tomorrow will be our doubts of today.
"The past is a foreign country; they do things differently there."
Sometimes the hardest thing and the right thing are the same.
证明P=NP将对数学、密码学和算法设计产生深远的影响。
A good person will follow the rules, a great person will follow himself.
Disaster relief architecture must be simple enough for victims to build themselves.