Gaston: How can you read this? There's no pictures!
Belle: Well, some people use their imagination.
Gaston: The whole town's talking about it! It's not RIGHT for a woman to read. Soon she starts getting ideas, and THINKING...!
Gaston: Were you in love with her, Beast? Did you honestly think she'd want you when she had someone like me?
Beast: You will join me for dinner! That's not a request!
Answer: The servants in the castle are transformed into enchanted objects because of the spell, but there are still plenty of other objects in the castle which were not originally people.
wizard_of_gore