With a sigh, Harry sat down cross-legged. "It's not that easy. At one point, your master believed in Tom. But then the Dark Lord became twisted and insane, so Regulus tried to stop him. But you helped battle that insanity. You helped to change Tom back into the man Regulus followed out of his own, free will. I think you did even more than your master could have ever hoped for. And, of all people, he would want you to have this locket as a reminder that doing the right thing is sometimes impossible, no matter how hard you try. And that it's no shame to need others to help. Even if they were muggleborn and blood traitors." When Kreacher still seemed reluctant, he pulled the locket back. "Of course, if you don't want it, I can give it to Sirius. I'm sure he would enjoy ...."