—— 请按键盘 空白键 开始游戏 ——

Ignorance is easier to get than knowledge.
Ignorance more frequently begets confidence than does knowledge.
Every mathematical problem is a puzzle waiting to be solved, and every solution is a step towards greater understanding.
量子世界不仅比我们想象的更奇怪,而且比我们能够想象的还要奇怪。