根据短文内容判断正、误。
Peter lived in a village. He was sad recently because he thought that he had nothing left. One day, Peter went to ask a wise man for help. He said to the wise man, "I have nothing left, so I don't want to live." The wise man smiled sympathetically(同情地).
The wise man took out a piece of paper and drew a straight line down the middle. He explained that he would write down the things Peter had lost on the left side and the things Peter still had on the right side.
The wise man asked, "When did your family leave you?"
"What do you mean? They haven't left me. They love me!"
"That's great!" said the wise man. "Then that will be the first thing on the right side -Family haven't left. Now, do you have freedom(自由)?"
"That's a silly question. Of course I do!"
"Good! That's the second one on the right side-You have freedom!" said the wise man, writing it down.
After Peter was asked some more questions in the same way, he finally understood and smiled. "Things will change when you think of them in a different way!" he said.
As a matter of fact, change your attitude and you will change your world. It's necessary to have a positive(积极的)attitude to life.