—— 请按键盘 空白键 开始游戏 ——

The problem of quality management is not what people don't know about it. The problem is what they think they do know.
Escribir es recordar, pero también es olvidar.
拥有股票就像有孩子一样——不要涉足超过你能处理的数量。
The essence of mathematics lies in its freedom.