"The Popularity of Error and The Unpopularity of Truth" is a 19th-century flat-Earth treatise by John Hampden that argues against the Copernican and Newtonian models, asserting the Earth is a stationary, flat plane. Hampden heavily utilized Parallax's (Rowbotham) "Zetetic Astronomy" to argue that the Earth's rotundity is scientifically unsupported and contrary to scripture.