Some writers can only deal with childhood experience because it's complete. For another kind of writer life goes on and he's able to keep processing that as well.
The experience and behavior that gets labeled schizophrenic is a special strategy that a person invents in order to live in an unlivable situation.
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There are people hell-bent on the idea that we're a Christian band in disguise and that we have some secret message. We have no spiritual affiliation with this music. It's simply about life experience.