It can be about Napolean. But I believe it's even bigger than that. It's about power, and anyone who strives for power. Be it a king, a politician, and even, so apt in this day & time, a ceo of a big corporation.
It's about selling ones soul for power. And in the end, what do you really have? Only the very same thing that the most ordinary man has: the fact that everyone, in the end, must face their own mortality.
I think this song is beautiful. I think it is the perfect song for the time. It captures this era of corrupt politicians (Bush, Cheney), false religious 'leaders' who are only interested in enriching themselves, and those crooked ceos who squandered the futures of the common people for their own disgusting greed.