Robert Chambers FRSE FGS LLD (/ˈtʃeɪmbərz/; 10 July 1802 – 17 March 1871) was a Scottish publisher, geologist, evolutionary thinker, author and journal editor who, like his elder brother and business partner William Chambers, was highly influential in mid-19th-century scientific and political circles.
Edward Gibbon was an English historian, writer and Member of Parliament. His most important work, The History of the Decline and Fall of the Roman Empire, was published in six volumes between 1776 and 1788 and is known for the quality and irony of its prose, its use of primary sources, and its polemical criticism of organized religion.
Arnold Toynbee, (born April 14, 1889, London—died Oct. 22, 1975, York, North Yorkshire, Eng.), English historian whose 12-volume A Study of History (1934–61) put forward a philosophy of history, based on an analysis of the cyclical development and decline of civilizations, that provoked much discussion.