—— 请按键盘 空白键 开始游戏 ——

每个数学问题都有一个解决方案;有时只是需要时间去找到它。
Liberal democracy may constitute the "end point of mankind's ideological evolution" and the "final form of human government," and as such constituted the "end of history."
"The true measure of success is how you handle failure."