—— 请按键盘 空白键 开始游戏 ——

教育的本质意味着:一棵树摇动另一棵树,一朵云推动另一朵云,一个灵魂唤醒另一个灵魂。
The strength of a habit is a function of the number of times it has been reinforced.
"The greatest truths are the simplest, and so are the greatest men."