Always be willing to learn, because the moment you stop learning is the moment you stop growing.
永远愿意学习,因为你停止学习的那一刻就是你停止成长的那一刻。
The essence of mathematics lies in its freedom.
The only limit to our realization of tomorrow is our doubts of today.
在以情动人前,你自己要先被打动。在你催人泪下前,你自己要热泪盈眶。在你以理服人前,你自己要坚信不疑。