What is the main theme in the story, Little Kingdoms?

The power of art, one of the story's main themes, becomes most clear at the end of the story during the first screening of his most precious cartoon. All of the people that have meant anything to him gather together, and it is his art, the world that he creates out of his imagination that brings them together. This is the power of art for Millhauser; it has the ability to reconcile and remember, even if it is only for an audience of one or perhaps two.