Quill is the island where the book The Unwanteds takes place. It is very dry and desolate. Most of the vehicles are very old because Quill has blocked off communications with the other islands around making trade impossible, so they ran out of their natural materials. Every year they sort the 13 year-olds into Unwanteds, Necessaries, and Wanteds. Wanteds will go to the university while the Necessaries will work on farms and carry out every other undesirable task. Unwanteds will go to the Death Farm, later revealed as Artimé. Most Necessaries left Quill when Artimé was discovered, infuriating the Wanteds, but came back when Artimé lost its mage, Mr. Today, which meant Artimé was no more.
Quill was originally founded by Marcus Today and Justine, along with many people who had joined them in their travels. After having Marcus remove Quilled memories of the outside world, and of magic, Justine ordered the wall built. Quill was more isolated from the world, and remained so for many years.