What does the story teach us about?

Question

The following text is for questions 10 to 13.

Once upon a time, there was a farmer who had carted pears to market. They were very sweet and fragrant. He hoped he get a good price for them. A monk with a torn cap and tattered robe stepped up to his cart and asked for one. The farmer chased him away, but the monk did not go. The farmer grew angry. The monk said, "You have pears by the hundred in your cart. I only ask for one."

The bystanders told the farmer that he ought to give the monk one of the smaller pears and let him go. The farmer would not do it. An artisan saw the whole affair from his shop and felt annoyed. He took money, bought a pear, and gave it to the monk.

The monk thanked him and said, "I have beautiful pears and I invite you all to eat them with me." Then, a person asked, "If you have pears, why do you not eat your own?" He answered, "I first must have a seed to plant."

He ate the pear. When he had finished, he planted the pear's pit into the ground and water the pear. Thousands of eyes were turned on the pear spot as sprout had begun to be seen. The sprout grew and, in a moment, it had turned into a tree. A tree which immediately produced large and fragrant pears. The monk climbed the tree and handed down pears to the bystanders. In a moment all the pears had been eaten up. Then, the monk cut down the tree and went away.

The farmer had stood there and had entirely forgotten the business he hoped to do with his pears. When he turned around to look after his cart. His pears had all disappeared. Then, he realized that the pears the monk had divided had been his own. He looked more closely, and the axle of his cart had disappeared. It was evident that it had been chopped off quite recently. And then he realized that the pear tree which the monk had chopped down must have been his axle. The whole crowd in the market burst out into loud laughter.

(Adapted from: https://www.worldoftales.com/Asian_folktales/Chinese_Folktale_48.html (September 22, 2019))