Do you know who was Thomas Edison? He was a scientist who invented bulb which gives us light. Do you want to learn Moral from his real life story? If yes, then read it out!
Thomas Edison tried two thousand different materials in search of a thread for the light bulb. When none worked satisfactorily, his assistant complained,
“All our work is in vain. We have learned nothing.” Edison replied very confidently,
“Oh, we have come a long way and we have learned a lot. We now know that there are two thousand elements which we cannot use to make a good light bulb.”