Contrary to popular belief and hope, people don't usually come running when they hear a scream. That's not how humans work. Humans look at other humans and say, 'Did you hear a scream?' because the first scream might have been you screaming inside your head, or a horse backfiring.

The little flickering part of his brain that was still sparking coherent thought through the fog of mind-numbing terror that filled Colon's head was telling him that he was so far out of his depth that the fish had lights on their noses

Down there - he said - are people who will follow any dragon, worship any god, ignore any inequity. All out of a kind of humdrum, everyday badness. Not the really high, creative loathsomeness of the great sinners, but a sort of mass-produced darkness of the soul. Sin, you might say, without a trace of originality. They accept evil not because they say yes, but because they don't say no.

Inside every sane person there's a madman struggling to get out," said the shopkeeper. "That's what I've always thought. No one goes mad quicker than a totally sane person.

Oh. I see. People don't want to see what can't possibly exist.

He didn't administer a reign of terror, just the occasional light shower.