—— 请按键盘 空白键 开始游戏 ——

Mathematics teaches us to think logically and creatively at the same time.
The beauty of formal methods lies in their ability to provide absolute certainty about the correctness of a system.
过去从未死去,它甚至还没有过去。
The realities are that, you know, as a black man, Barack can get shot going to the gas station.