One day, a poor boy was selling goods door to door in order to save enough money for his tuition. After a hard day's work, he felt very hungry at this time, but he touched his whole body and had only a dime. What shall we do? He decided to beg for food from the next family. When a beautiful girl opened the door, the little boy was a little at a loss. Instead of asking for food, he begged for a drink of water. Seeing that he was hungry, the girl brought him a large glass of milk. The boy drank the milk slowly and asked, "How much should I pay?" The girl replied, "You don't have to pay a penny. Mother taught us to give love without asking for anything in return. " The boy said, "then, please accept my heartfelt thanks!" " With that, the boy left the house. At this time, he not only felt energetic, but also saw God nodding and smiling at him.

In fact, the boy was going to drop out of school, but he gave up the idea.

A few years later, the beautiful girl got a rare serious illness, and the local doctor could do nothing about it. Finally, she was transferred to a big city for treatment and expert consultation. The little boy in those days is now a famous doctor Howard Kelly, and he also participated in the formulation of the treatment plan. A strange idea flashed through his mind when he saw the patient's medical history written on the medical record. He immediately got up and went straight to the ward.

When he came to the ward, Dr. Kelly immediately recognized the patient lying in bed as a benefactor who had helped him. He returned to his office, determined to make every effort to cure his benefactor. From that day on, he took special care of the patients. After hard work, the operation was successful. Dr. Kelly asked for a medical bill to be sent to him and signed it next to it.

When the medical bill was sent to this special patient, she was afraid to read it because she was sure that the cost of treatment would cost all her property. Finally, she got up the courage and opened the notice of medical expenses. Next to the fine print caught her attention, and she couldn't help reading it softly:

"Medical expenses-a full glass of milk. Dr. Howard Kelly "