—— 请按键盘 空白键 开始游戏 ——

Even in abstraction, mathematics has profound real-world applications.
世间万物,没有孤立存在的,必然有其对立面。
The only real knowledge is self-knowledge.
自我不是在孤立中找到的,而是在关系中找到的。
Every day is a new opportunity to change your life.