Once upon a time, there was a writer who had a house very close to the sea. Every morning, he went for a walk along the beach — it helped him to relax, to get ready for his working day, and to get ideas.
One beautiful sunny morning, as he was walking near the edge(边缘)of the water, he looked along the beach and in the distance he saw a little girl near the water. She was bending down and then standing up — he wasn't sure what she was doing. So he decided to go closer to find out.
When he got near to the little girl, he saw that on the beach there were lots of starfish, and the little girl was picking them up, one at a time, and throwing them into the water.
The writer went closer to the girl and asked her what she was doing. The girl stopped and looked up at the writer — she seemed surprised. Then she said that she was throwing the starfish back into the sea. She said, "The sun is up, and the tide(潮) is going out. If I don't throw the starfish back into the water, they will die. "
Now it was the writer who was surprised. He wanted to persuade her that she was wasting her time. He said, "But look, there are hundreds of starfish here. You can't possibly pick them all up and throw them back. It's not worth it. Can't you see that you can't possibly make a difference here"
The girl smiled, bent down and picked up yet another starfish, and as she threw it back into the sea, she replied, "If I hadn't thrown it back, it would have died. I think I made a difference to that one. "