—— 请按键盘 空白键 开始游戏 ——

The only limit to our realization of tomorrow is our doubts of today.
The people who are crazy enough to think they can change the world are the ones who do.
你最不满意的客户是你最大的学习来源。
The Erdős discrepancy problem fascinated me because it was so simple to state yet so deep in its implications.