—— 请按键盘 空白键 开始游戏 ——

We must remember that in nature there are neither rewards nor punishments—there are consequences.
The evening is the time of day I like best. I love the transition from day to night, the way the light changes, the way the air feels.
一个好的数学家是能看到定理之间类比的人;一个伟大的数学家是能看到类比之间的类比的人。