Once a young man was passing by a street where he saw an old man sitting on road side begging for money. That old man was sitting there with an empty bowl in kept in front of him and a card board sign was kept beside that empty bowl. On card board cut out it was written: "Blind - please help..!!"Young man noticed that despite it was rush hour and many people were passing by that old man yet no one was giving him any money. Young man felt very bad that no one was helping that old man or giving him any money. So he went to that old man and took his card board in his hand. He then took out a thick marker pen out of his pocket and turned the cardboard sheet back-to-front and re-wrote the sign then went on her way. Old man noticed that someone was there writing something on the board but didn't said anything. Just in few minutes, that empty bowl was now filled with money. Old man noticed that and stopped a stranger and asked him what was written on that card board. Stranger replied, "It says.. - it's a beautiful day. you can see it. I cannot.." 
We tend to think a lot. Sometimes answers are just simple. 