“Harry had read once, somewhere, that the opposite of happiness wasn't sadness, but boredom; and the author had gone on to say that to find happiness in life you asked yourself not what would make you happy, but what would excite you. And by the same reasoning, hatred wasn't the true opposite of love. Even hatred was a kind of respect that you could give to someone's existence. If you cared about someone enough to prefer their dying to their living, it meant you were thinking about them.”