Loyalty mods don't whisper propaganda in your skull. They don't bombard you with images of the object of devotion while stimulating the pleasure centres of your brain, or cripple you with pain and nausea if you stray from correct thought. They don't cloud your mind with blissful euphoria, or feverish zealotry; nor do they trick you into accepting some flawed but elegant piece of casuistry. No brainwashing, no conditioning, no persuasion. A loyalty mod isn't an agent of change; it's the end product, a fait accompli. Not a cause for belief, but belief itself, belief made flesh - or rather, flesh made into belief.

--Greg Egan, "Quarantine".