The fable of "a suspicious neighbor steals an axe" is well known. In fact, it is a story of "there is a hammer in your hand (in your head) and you can see that everything is a nail"

Liezi Fu Shuo: A man with a dead axe is the son of his neighbor. The neighbor watched his footsteps and stole an axe. Color, stealing axes; Words, stealing axes; Attitude, don't steal or do. Suddenly, he got his axe from his valley. He saw his neighbor's son again and again. No one likes to steal an axe.

Once upon a time, a man lost an axe. He suspected that the neighbor's son had stolen it, so he observed the man. He walked like an axe thief. Look at the man's face and expression, it's like stealing an axe; Listening to him is more like stealing an axe. Every word and deed and every move of this man is like stealing an axe.

Not long after, he (the man who lost the axe) found the axe while rummaging through his grain pile. When he met his neighbor's son the next day, he felt that his words and deeds were nothing like a thief with an axe.

The neighbor's son doesn't look like a thief because he put down the hammer in his hand.