Andrew Fitzmaurice is Professor of the History of Political Thought in the School of History, Queen Mary University of London. He is the author of Humanism and America: An Intellectual History of American Colonisation, 1500–1625 (2003); Sovereignty, Property, and Empire 1500–2000 (2014); and King Leopold's Ghostwriter (2021). Rachel Hammersley is Professor of Intellectual History in the School of History, Classics and Archaeology, Newcastle University. She is the author of French Revolutionaries and English Republicans: The Cordelier Club, 1790-1794 (2004); The English Republican Tradition and Eighteenth-Century France (2010); James Harrington: An Intellectual Biography (2019) and Republicanism: An Introduction (2020).