Once upon a time, there was a small town. There lived a man by himself who couldn't see. He was blind. Yet, he carried a lighted lamp with him whenever he went out at night. One night as he was coming home after having a dinner outside, he came across a group of young travellers. They saw that he was blind, yet carrying a lighted lamp. They started passing comments on him and made a fun of him. One of them asked him, Hey Man! You are blind and can't see anything Why do you carry the lamp then? The blind man replied, Yes, unfortunately, I am blind and I can't see anything but a lighted lamp which I am carrying is for the people like you who can see. You may not see the blind man coming and end up pushing me. That is why I carry a lighted lamp. The group of travellers felt ashamed and apologized for their behaviour.