Harry shakes his head. "I am not lying. You-Know-Who created items like these and one is being stored here at this very moment. My offer is this. Give me the item. I can tell you where to find it. You need only give it to me. Once I have collected all of them, I will use the sword of Gryffindor to destroy them. Then, the sword will be returned to the goblin kingdom as its rightful owners."