Originally Answered: Does anyone know the quote in Harry Potter where Harry acknowledges that he has to kill Voldemort?
"... Harry watched Dumbledore striding up and down in front of him, and thought. He thought of his mother, his father and Sirius. He thought of Cedric Diggory. He thought of all the terrible deeds he knew Lord Voldemort had done. A flame seemed to leap inside his chest, searing his throat.
'I'd want him finished,' said Harry quietly. 'and I'd want to do it.'
'Of course you would!' cried Dumbledore. 'You see the prophecy does not mean you have to do anything! But the prophesy caused Lord Voldemort to mark you as his equal ... in other words, you are free to choose your way, quite free to turn your back on the prophesy! But Voldemort continues to set store by the prophesy. He will continue to hurt you ... which makes it certain really, that -'
'That one of us is going to end up killing the other,' said harry. 'yes.'
... But he understood at last what Dumbledore had been trying to tell him. It was, he thought, the difference between being dragged into the arena to face a battle to the death and walking into the arena with your head held high. Some people, perhaps, would say that there was little to choose between the two ways, but Dumbledore knew - and so do I, thought harry, with a rush of fierce pride, and so did my parents - that there was all the difference in the world."
- HP&THBP pages 478-9