A 24 year old boy seeing out from the train's window shouted..
"Dad, look the trees are going behind!" dad smiled and a young couple sitting nearby, looked at the 24 year old's childish behavior with pity,
suddenly he again exclaimed … "dad, look the clouds are running with us !"
the couple couldn't resist and said to the old man… "why don't you take your son to a good doctor?"
the old man smiled and said … "i did and we are just coming from the hospital, my son was blind from birth, he just got his eyes today…"