None know if our temple, the Cradle, will prove powerful enough to contain this evil forever. How can we Chozo hope for it to remain intact when that which it guards writhes in the darkness, growing always stronger? The fate of this world rests with the gathering of Artifacts we call the Cipher, but even it is not all-powerful. It is strong, yes; an enchanted whole made of twelve links. Still, it is finite in its reach, and we who guard it are slowly succumbing. When our vigilance crumbles away into madness, the Cipher will be exposed and the fate of Tallon IV will be beyond our influence.
— Metroid Prime