—— 请按键盘 空白键 开始游戏 ——

一个人最危险的敌人是他自己的口舌。
Success is not final, failure is not fatal: It is the courage to continue that counts.
要成为一个好的数学家,你需要既有直觉又有严谨。
Memory is not a fixed entity but a reconstructive process influenced by context and experience.