It was a blonde. A blonde to make a bishop kick a hole in a stained-glass window.

Quality is never an accident; it is always the result of intelligent effort.

任正非内部讲话稿

道理明白则文辞畅达，气势充沛则言辞得当。

数学家最好的工作往往来自于在别人看不到联系的地方发现联系。