—— 请按键盘 空白键 开始游戏 ——

You can't let praise or criticism get to you. It's a weakness to get caught up in either one.
The most important part of teaching is to teach what it is to know.
The only way to change behavior is through manipulation of reinforcement contingencies.
人生は、自分が望むように生きるか、他人が望むように生きるかのどちらかだ。