—— 请按键盘 空白键 开始游戏 ——

Every mathematical problem has a solution; the challenge is finding it.
No president who performs his duties faithfully and conscientiously can have any leisure.
Science is not just about answering questions, but also about discovering new questions to ask.
我只是一个想要有所作为的孩子。
我不睡觉,我只是让眼睛休息。