模形式的算术是理解高维对象的门户。
The most important challenge facing the world today is the need to create strong, effective, and accountable states in the developing world.
"You can't go back and change the beginning, but you can start where you are and change the ending."
我感到难过,不是因为你欺骗了我,而是因为我再也不能相信你了。
A story doesn’t have to be loud to be heard.