—— 请按键盘 空白键 开始游戏 ——

The hardest thing is to live richly in the present without letting it be tainted by the past or future.
数学家是能在定理间找到类比的人;更好的数学家能在理论间看到类比;而最优秀的数学家能注意到类比之间的类比。
The market is full of noise, and we try to filter it out.