—— 请按键盘 空白键 开始游戏 ——

All mankind... being all equal and independent, no one ought to harm another in his life, health, liberty, or possessions.
数学直觉就像肌肉一样 - 通过锻炼会变得更强大。
I don’t need a plan, I just need a vision.
I'm more interested in the journey than the destination.
"In computer science, we are always trying to find the balance between expressiveness and tractability."