Cotação retirada da resposta de @DavidS em Por que Gringotts precisa de um Disjuntor de Maldição?
"We are talking about a different breed of being. Dealings between wizards and goblins have been fraught for centuries ... There has been fault on both sides, I would never claim that wizards have been innocent. However, there is a belief among some goblins, and those at Gringotts are perhaps most prone to it, that wizards cannot be trusted in matters of gold and treasure, that they have no respect for goblin ownership."
"I respect --" Harry began, but Bill shook his head. "You don't understand, Harry, nobody could understand unless they have lived with goblins. To a goblin, the rightful and true master of any object is the maker, not the purchaser. All goblin made objects are, in goblin eyes, rightfully theirs."
"But it was bought --"
"-- then they would consider it rented by the one who had paid the money. They have, however, great difficulty with the idea of goblin-made objects passing from wizard to wizard. You saw Griphook's face when the tiara passed under his eyes. He disapproves. I believe he thinks, as do the fiercest of his kind, that it ought to have been returned to the goblins once the original purchaser died. They consider our habit of keeping goblin-made objects, passing them from wizard to wizard without further payment, little more than theft."
Eu acredito que esta é a totalidade do diálogo entre Harry e Bill sobre este assunto.