from Dreams of Gods and Monsters, by Laini Taylor:
"My wife likes to say that the mind is a palace with rooms for many guests. Perhaps the butler takes care to install the delegates of Science in a different wing from the emissaries of Faith, let they take up arguing in the passages.
So, the voices in my head.
There's one that pops up now and again and says," there hasn't been any chocolate around here for a while. When are you going to buy some chocolate?"
He's easy to ignore.
The other one works on things more readily accessible.
"There's vanilla ice cream in the freezer," he says.
"It's cool, creamy, sweet and delicious. Why don't you have some? It's hours until dinner."
"Cool?" I said. "Cool?"
"Okay, okay'" he says. "It's icy cold and will freeze the roof of your mouth, but everything else I said is true."
Dammit, he was right. It DID freeze the roof of my mouth.