“It’s bigger on the inside” is not only an evocative literary device, it is also a phrase heavy laden with Good News found in the true story of Christianity, especially at Christmas.
I love books. I love authors. I love the way putting words down on paper incarnates ideas that might otherwise remain ghosts of the mind, flitting here and there in our gray matter.
Before long I was deeply involved in the trilogy (the reader is invariably "drawn into" the story in a unique way, and for a good reason as we shall see).