Harry Potter and the Deathly Hallows
"That which Voldemort does not value, he takes no trouble to comprehend. Of house-elves and children's tales, of love, loyalty, and innocence, Voldemort knows and understands nothing. Nothing. That they all have a power beyond his own, a power beyond the reach of any magic is a truth he has never grasped." (35.28)
"Maybe a man in a million could unite the Hallows, Harry. I was fit only to possess the meanest of them, the least extraordinary. I was fit to own the Elder Wand, and not to boast of it, and not to kill with it. I was permitted to tame and to use it, because I took it, not for gain, but to save others from it.
"But the Cloak, I took out of vain curiosity, and so it could never have worked for me as it works for you, its true owner. The stone I would have used in an attempt to drag back those who are at peace, rather than to enable my self-sacrifice, as you did. You are the worthy possessor of the Hallows." (35.84-85)
"I'm putting the Elder Wand," he told Dumbledore, who was watching him with enormous affection and admiration, "back where it came from. It can stay there. If I die a natural death like Ignotus, its power will be broken, won't it? The previous master will never have to be defeated. That'll be the end of it.
Dumbledore nodded. They smiled at each other.
"Are you sure?" said Ron. There was the faintest trace of longing in his voice as he looked at the Elder Wand.
"I think Harry's right," said Hermione quietly.
"That wand's more trouble than it's worth," said Harry. "And quite honestly… I've had enough trouble for a lifetime." (36.147-150)