p. 477

“…Have you any idea how much tyrants fear the people they oppress? All of them realise that, one day, amongst their many victims, there is sure to be one who rises against them and strikes back!…Always he was on the lookout for the one who would challenge him. He heard the prophecy and he leapt into action, with the result that he not only handpicked the man most likely to finish him, he handed him uniquely deadly weapons!”

Dumbledore continued speaking to Harry:

“…you have never been seduced by the Dark Arts, never, even for a second, shown the slightest desire to become one of Voldemort’s followers!…

“You are protected, in short, by your ability to love!…pure of heart.”

p. 479:

Harry realized that there was all the difference in the world between choosing to face a battle to the death with your head held high  and being dragged into it.