"I think therefore I am" --Rene Descartes.  Not "I walk therefore I am" or "I see a reflection therefore I am." To be, then, is to think. And to think is to be. This means our thoughts are the only thing that are real. If they mean that someone "is", and if to exist means to be real.... Oh you get it?  So then there is no "fiction" because the imagination is our thoughts. They are real. It is the thinker, the one immersed in imagination who is most alive, the most "is." And the readers are teleported into another dimension that's just as real for a while. This suggests a new quote: "I think, therefore they are. Then I write it down and they are forever."