Representation theory provides the language in which many number-theoretic phenomena can be expressed.
"In the middle of difficulty lies opportunity."
我不是神,我是一个有缺陷的人。
悲伤是一座房子,那里的椅子已忘了如何支撑我们,镜子忘了如何映照我们,墙壁忘了如何包容我们。