Aesop used insects as well as animals in his stories. In a fable about an ant, he tells how the small creature carried grain from the fields to store it for the winter in a hole it had dug. The ant worked very hard all summer long. The work was difficult and he had little time to play.
In the meantime, a grasshopper was playing and singing in the same field as the ant. The grasshopper never worked. Instead he hopped, sat in the warm sun, and was very happy.
When the winter came, the grasshopper went to the ant and said, "I'm so cold, and i can't find any food. I've looked all over the farm for some, but there isn't any. Please give me some of your corn."
"You sang all summer to keep youself cheerful," said the ant, "so you can dance all winter to keep yourself warm. And i won't give you any food. You did nothing to help yourself when you could." The ant was safe and warm and well fed, but the grasshopper was left cold and hungry.
This is a harsh story, but tells us to use the good times to prepare for the bad.