Many years ago, two friends, Mike and Jim, were walking through the desert. Somehow they  began to quarrel (争吵  ) about small matters. Suddenly, Mike hit Jim in the face. Jim was hurt, but he said nothing. He just wrote in the sand: Today my best friend hit me in the face.
They kept on walking,  and at last,  they found a river.  So they decided to take a bath.  Suddenly, Jim got stuck in the mire (陷在泥里 ). At that moment, Mike saved him. After Jim felt better, he wrote on a stone: Today my best friend saved my life.
Mike saw this, and asked, “After I hurt you, you wrote in the sand. After I saved you, you wrote on a stone. Why?”
Jim answered, “When someone hurts us, we should write it down in sand. Thus winds of forgiveness (宽恕 ) can blow it away. But, when someone does something good for us, we must engrave (铭刻) it in stone, then no wind can ever blow it away.”
When did the story happen?
What did Mike and Jim quarrel about?
Did Jim say anything when he was hit?
Where did Jim write after Mike saved him?
Who do you think might be deeply moved at last?