Harry Potter and the Deathly Hallows
"Ron, we're the only ones who can end it! Please – Ron – we need the snake, we've got to kill the snake!" said Hermione.
But Harry knew how Ron felt: Pursuing another Horcrux could not bring the satisfaction of revenge; he too wanted to fight, to punish them, the people who had killed Fred, and he wanted find the other Weasleys, and above all make sure, make quite sure that Ginny was not – but he could not permit that idea to form in his mind – .
"We will fight!" Hermione said. "We'll have to, to reach the snake! But let's not lose sight now of what we're supposed to be d-doing! We're the only ones who can end it!" (32.14-16)
Voldemort had raised his wand. His head was still tilted to one side, like a curious child, wondering what would happen if he proceeded. Harry looked back into the red eyes, and wanted it to happen now, quickly, while he could still stand, before he lost control, before he betrayed fear –.
He saw the mouth move and a flash of green light, and everything was gone. (34.90-91)
"Do not pity the dead, Harry. Pity the living, and, above all, those who live without love. By returning, you may ensure that fewer souls are maimed, fewer families are torn apart. If that seems to you a worthy goal, then we say good-bye for the present."
Harry nodded and sighed. Leaving this place would not be nearly as hard as walking into the forest had been, but it was warm and light and peaceful here, and he knew that he was heading back to pain and fear of more loss. (35.94-95)