Killing for ideas is the most dangerous form of killing at all. Being willing to die for your ideas rather than your country is another concept, but dying for an idea, like in religion, is absurd.
Of course, I do occasionally arouse primeval instincts, but I mean, most men can do that. They can't do it to so many. I just happen to be able to do it to several thousand people. It's fun to do that.
One song isn't going to ever change things, but I suppose it's the accumulation of music generally [that is]. If you can imagine a world that has no music in it, it would be a very different world, so music does change the world by virtue of all the music in it. Cumulative music of every kind, from banging a drum to playing a flute or recording symphonies, or singing 'War, what is it good for?' All those things change the whole way we live.