There is a story that a businessman in new york felt sorry for a pencil salesman who was in rags. He threw a dollar into the pencil seller's arms and walked away. But he suddenly felt that this was wrong, so he hurried back and took out some pencils from the pencil seller. He apologized and explained that he forgot to take it. I hope you don't mind. At last he said, "You and I are both businessmen. You have something to sell with a price tag on it. "
A few months later, at a social occasion, a well-dressed salesman met the new york businessman and introduced himself: "You may have forgotten me, and I don't know your name, but I will never forget you. You restored my self-esteem. I always thought I was a beggar selling pencils until you told me that I was a businessman. "