In idle moments I ponder these: the short, definitive statements of ideology made by death and black metal musicians.
1. Only death is real -- Hellhammer
2. No jobs! -- Immortal
3. "[Most people are] talking monkeys with car keys" -- Kam Lee
4. Problems remain! -- Sepultura
5. Death is certain, life is not -- various
I'm sure there are others I'm missing, but we get a good picture of the genre from these de facto slogans.