 The Thoth communicate in distinct forms of whistles, clicks, and shrills, and also have a system of writing for which they use a mysterious kind of leathery paper.The human protagonist explains this system of writing merely looks like circles and spirals, but yet is too complicated for humans to translate, and is far too "alien" for humans to grasp.The language of the Thoth is also exceptionally complex, with no one word for anything—every time something is described, it will never be described in the same way any two times.