根据短文内容，回答下列问题。

Jimmy is good at drawing cartoons(擅长画卡通画). Do you know his book A Fish with a Smile (微笑)?

The book is about a man and a fish. The man is very lonely(孤独的). One day, when he walks by a pet shop, he sees a lovely fish. The fish always smiles at him. He buys the fish and takes her home. The man looks after(照顾)the fish very well. One night, the man has a dream(梦). He and the fish go to the sea. They are happy. Suddenly(突然), the man finds that he is in a glass ball(玻璃球)underwater(在水下). He cannot get out(出去). How can he be free? The man wakes up(醒来), he looks at the fish again. The lovely fish still smiles, but he knows she is not free or happy in his home. Then the man puts the fish into the sea!

If we love someone, let it be free!