—— 请按键盘 空白键 开始游戏 ——

When the mind that is subtle goes out through the brain and the sense-organs, the gross names and forms appear; when it stays in the heart, the names and forms disappear.
Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
要成为一个好的数学家,你需要既有直觉又有严谨。