Was there ever any doubt that Neil Gaiman is a complete and utter genius?

"Dearest Mama, as by now you must be aware that I have found the mirror mask. I shall use it to get away. There are other places, I'll find one with another girl like me in it. A life I can take, she'll not be as clever as me of course. I can't live in your world, I have to grow up. I'm going to run away and join real life. Of course If I use the mirror mask it may upset things a bit.
But you can't run away from home without destroying somebodys world."