Codex text
"In the Fade, form does not spring from function. It is separate in ways the waking world cannot permit. Nightmare's corridors have no real-life counterparts.
What determines which sections of the physical world are echoed in the Fade? Is there an underlying logic, or glacial patterns past comprehension? Do our collective fears and longings craft what we see? The will of a mage is especially potent. We may learn to shape the Fade's pathways, if we are ever-mindful of the dangers this invites."
Excerpted lecture from Professor Emmrich Volkarin. Advanced Studies of the Fade.