—— 请按键盘 空白键 开始游戏 ——

数学是理解宇宙的钥匙。
Mathematics is the key to understanding the universe.
The past is a foreign country; they do things differently there.
Fairy tales are more than true: not because they tell us that dragons exist, but because they tell us that dragons can be beaten.
The international system is inherently competitive, and states are constantly trying to outmaneuver each other.
The greatest virtue of man is perhaps curiosity.