—— 请按键盘 空白键 开始游戏 ——

You have to be comfortable with being uncomfortable if you want to make progress in mathematics.
Books say: She did this because. Life says: She did this. Books are where things are explained to you; life is where things aren't.
The best research often comes from unexpected observations.
A long habit of not thinking a thing wrong gives it a superficial appearance of being right.
解释:善念不可轻易丧失,恶念不能肆意滋长。