"[T]he "satiety" which makes fire pass into other forms, which makes it seek "rest in change" (frs. 82, 83), and "hide itself" (fr. 10) in the "hidden attunement" of opposition, is only one side of the process. The other is the "want" which leads it to consume the bright vapour as fuel. The upward path is nothing without the downward (fr. 69). If either were to cease, the other would cease... and the world would disappear; for it takes both to make... stable reality."