All Things Are Expedient, All the Time

So this guy inside my head says to me,
"If you preach that the rules aren't important,
What's to stop people from being awful?"
And this other character answers him,
"Never mind that! Every failure of yours
Will be evidence you're the awful one."

Another ghost to tell us what to do.

The human brain's the only haunted house
That can be relied on for noisy spooks,
And it's because of our own haunted brains
That we drag our latest technologies
Into abandoned buildings, seeking proofs.
Ghosts are dolls that make themselves, dolls in dolls,
Ghosts in ghosts, complaining, all the way down.