—— 请按键盘 空白键 开始游戏 ——

The reward of seeing the joy on the faces of the parents is immense.
只有我们个人对自由的信仰才能让我们保持自由。
Psychology must be independent of philosophy and physiology.
You have to spend some energy and effort to see the beauty of math.
做事情,不能有伤害别人的坏念头;但要有警惕他人、防备他人的念头。这是在告诫与人交往思考不周的人。