—— 请按键盘 空白键 开始游戏 ——

No one can become fully aware of the very essence of another human being unless he loves him.
The study of mathematics is a journey without an end.
我想知道,我一生中见过多少人,却从未真正看见过他们。
"Books are the keys to understanding the world and ourselves."
The more we learn about black holes, the more we realize how much we still don’t know.