—— 请按键盘 空白键 开始游戏 ——

耐心是一种美德,我正在学习耐心。这是一个艰难的课程。
The anarchic nature of the international system means that states must rely on self-help to ensure their survival.
"Books are a form of political action. Books are knowledge. Books are reflection. Books change your mind."
The power of mathematics lies in its generality and abstraction.
不要为了别人而活,要为自己而活。
现在就是开始你职业生涯的时候。