Garry was first a bunch of electrons bouncing between neural connections in the authors brain, then Garry bounced so hard he formed a new connection. From there he grew into an idea. This idea sparked the imagination. Garry didn't like being alone, so one night he blundered about the authors brain creating a dream; and what a dream it was. Such was the impact of this dream that a new idea was sparked. Garry was no longer alone. Together, these ideas grew until a third idea was formed spontaneously. This idea bound the three together and the author began to write, to draw, to solidify the ever-changing nature of the first two ideas. The second idea became a universe, the third a story and Garry had a world.
Dungeons & Dragons (The whole reason I'm making my universe really)
The Lord of the Rings, by J.R.R Tolkien