Many years ago, when I worked as a volunteer at Stanford Hospital, I got to know a little girl whose name is Liz. She had a serious disease. Her only chance of recovery depended on blood transfusion. Her brother was only 5 years old. He had the same disease. It was a miracle (奇迹) that he survived in the fight with the illness. The doctor explained the situation to the little boy. Then he asked the boy if he was willing to give blood to his sister. I saw him hesitate for only a moment before taking a deep breath and saying, “Yes, I’ll do it if it will save Liz.” During the blood transfusion, he lay in bed next to his sister and smiled. With the help of her brother’s blood the color returned to Liz’s white cheeks. However, the boy’s face became pale because he had lost blood. He looked up at the doctor and asked in a trembling voice, “Will I start to die right away?” Since he was young, he misunderstood the doctor. He thought that he had to give up his life to save his sister. What a mistake, what a great boy!