—— 请按键盘 空白键 开始游戏 ——

数学的本质在于它的自由。
The essence of mathematics lies in its freedom.
预测未来的最好方式就是去创造它。
No arts; no letters; no society; and which is worst of all, continual fear and danger of violent death; and the life of man, solitary, poor, nasty, brutish, and short.
You are always a valuable, worthwhile human being — not because anybody says so, not because you're successful, not because you make a lot of money — but because you decide to believe it and for no other reason.
Efficiency in mining comes from continuous improvement, not just big breakthroughs.