—— 请按键盘 空白键 开始游戏 ——

I don’t love novels that end happily. They depress me so much.
The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.
Positive emotions are not trivial luxuries, but instead may be critical necessities for optimal functioning.
每一个心理行为都是调整的行为。
"In mathematics, you don't understand things. You just get used to them."