I've seen demons with horns, demons with three eyes, demons with ten eyes. Demons with extra limbs. Demons with green skin. Demons with slime and demons who look like big old nasty lizard snake things that want to bite your head off. I've met demons who gamble with kittens and others who just like to run around raising as much Hell as possible. [Pause.] But I've also seen ones look just like humans, act just like humans, feel just like humans. The difference is usually in the soul.

Demons don't have them, you see. [Oh God did Buffy just make herself out to be even more insane?]] Are those answers any better?