—— 请按键盘 空白键 开始游戏 ——

The best time to plant a tree was 25 years ago. The second best time is today.
The deeper you go into mathematics, the more you realize how much remains unknown.
Risk more than others think is safe. Dream more than others think is practical.
The man who is anybody and who does anything is surely going to be criticized, vilified, and misunderstood.
别让任何人定义你的价值。