Flatland : a romance of many dimensions

Edwin A. Abbott (1838–1926) became headmaster of the City of London School at twenty-six and led it for nearly twenty-five years, while writing books on English grammar, on Shakespeare's language, on how to write clearly and on theology.

He is remembered today for one small book, Flatland, published in 1884 under the pen name A Square: a mathematical fantasy about a two-dimensional world that is also a satire of Victorian society. Mathematicians still recommend it as an introduction to the idea of other dimensions.