—— 请按键盘 空白键 开始游戏 ——

To think is to confine yourself to a single thought that one day stands still like a star in the world's sky.
我一直在不停地努力,不嘲笑、不哀叹、不嘲笑人类的行为,而是理解它们。
Reinforcement is the central factor in the acquisition of new behavior patterns.