Flatland is a social satire by Edwin Abbott Abbott, published in 1884. The book describes a world of only two dimensions, in which each character is a different class of geometric shape, and is narrated by a pseudonymous ‘Square’. One day, the Square is visited by a Sphere from Spaceland, a world that has three dimensions. The Sphere visits Flatland every millennium in an attempt to introduce a new apostle to the idea of the third dimension.
