And Harry, with the unerring skill of the Seeker, caught the wand in his free hand as Voldemort fell backward, arms splayed, the slit pupils of the scarlet eyes rolling upward. Tom Riddle hit the floor with a mundane finality, his body feeble and shrunken, the white hands empty, the snakelike face vacant and unknowing. Voldemort was dead, killed by his own rebounding curse, and Harry stood with two wands in his hands, staring down at his enemy's shell.
I like the analogy that the way that we live in Western Society, the energy that we consume in the form of fossil fuels, is the energy equivalent in pre-fossil fuel terms of having 500 slaves.