The Hermetica

"Do you think Atum is invisible? Don't say that! Nothing is more visible than Atum. He created all things so that through them you could see him. This is Atum's Great Heart — that he manifests himself in everything. Everything can be known, including the insubstantial. Just as Mind is known through thoughts, so Atum is known through his creation."

― from "The Hermetica: The Lost Wisdom of the Pharaohs"