Once there was a farmer who had four sons. They were always quarreling with each other. .

One day,farmer called his sons and asked them to try  to break  bundle of sticks.

Each one tried but failed. Then the farmer gave one stick each to break. Each of them was able to do it easily.

The farmer said, If you are united nobody can get better of you. But you keep quarrelling, you will be broken one by one.