—— 请按键盘 空白键 开始游戏 ——

Success is not final, failure is not fatal: It is the courage to continue that counts.
A book is a garden, an orchard, a storehouse, a party, a company by the way, a counselor, a multitude of counselors.
I don't let the world steal my peace.
"The most powerful stories are often the simplest."
数学不是一项观赏性运动;要理解它,必须积极参与其中。