A blind man went to visit his relatives. After it got dark, his kind-hearted relative lit a lantern for him and said, "It's getting late and the road is dark. Take this lantern and go home!"The blind man became furious and said, "You clearly know that I'm blind, yet you still give me a lantern to light the way. Aren't you making fun of me?"His relative said, "You've made the mistake of thinking within limitations. When you're walking on the road, there are many other people walking on the road too. If you carry the lantern, others can see you and won't bump into you."The blind man thought about it and realized that was right!