Excerpt from "A Dissertation on the Realms," by H.R.M. Thansor.

Chapter 3, introduction.
"Little needs to be said about this realm, as it is the realm that we all call home. Many have mocked us over the years for placing Calsin as the first realm, but a calm understanding of the subject can yield no other alternative. That Calsin is its own realm, its own plane of existence, is undeniable. That we inhabit this land and sculpted its history, is equally undeniable. Thus, it can only be called the first realm. Perhaps it may seem high and mighty of us to do so, naming our own realm above all others, but is this not the way of life? It is impossible for us to know which realm may truly have come first, or which realm will be around when all others have perished. All we can know is that the ground that we view the other realms from may rightly be called 'first,' and, for the purposes of this book, I will continue to do so in the tradition of my forerunners."