—— 请按键盘 空白键 开始游戏 ——

Mathematics is not a careful march down a well-cleared highway, but a journey into a strange wilderness, where the explorers often get lost.
了解自己的一个好办法,是认真地觉察他人身上让你讨厌的一切。
The world is full of stories, but the stories are all one.