Michael Callahan quotes:

Remember: There's a reason the fairy godmother gave Cinderella two glass slippers.

He was right: not about her playing him, or about her laughing at him, but certainly about her carelessness, about her casual disregard for how he would feel if he found out, and about the stunning lack of depth it exposed in her character.

That's what novels are: They're amalgams of archetypes, collections of random traits one observes in other people through life, blended into fresh characters.