—— 请按键盘 空白键 开始游戏 ——

The only way to learn mathematics is to do mathematics.
知道是贤人而不举荐,很危险;知道是善事而不表彰,很危险;知道他能干而不任用,很危险。
He not busy being born is busy dying.
To men like that, time was a surfeit, a barrel they watched slowly drain. When really, he thinks, it’s a glowing puddle you carry in your hands; you should spend all your energy protecting it.