—— 请按键盘 空白键 开始游戏 ——

Each success only buys an admission ticket to a more difficult problem.
"The dead are always with us, and we are always with them."
问题不在于事物是否存在,而在于它是否具有能够在没有我们的情况下存在的本质。
孔子说:“温习旧知识时,能有新收获,就可以做老师了。”