Granny Weatherwax: “sin, young man, is when you treat people like things. Including yourself. That’s what sin is.”
Mightily Oates: “It’s a lot more complicated than that–”
“No. It ain’t. When people say things are a lot more complicated than that, they means they’re getting worried that they won’t like the truth. People as things, that’s where it starts.”
“Oh, I’m sure there are worse crimes–”
“But they starts with thinking about people as things…”

–from Carpe Jugulum, by Terry Pratchett.