Long long ago, an old man lived with his son on the border（边境） of a country. They both enjoyed riding horses（马）very much. One day, one of their good horses was lost. The old man's friends came to comfort him. But the old man said, "Well, this is not a bad（坏的） thing. Who
knows!"
A few months later, the missing horse came back with a great horse. The second day, his friends came to his home and were glad to see the horses. But the old man said, "Well, this may bring us
bad luck. "
One day, his son was having fun riding on the new horse. Suddenly, he fell from the horse and hurt one of his legs. The young man couldn't walk again. The old man's friends came and comforted him again. "This accident may bring us goodluck some day," the old man said.
A year later, all young men in the country were drafted（征兵）. But his son had to stay at home because of his leg.
