'Post-Truth' was Oxford Dictionary's 2016 word of the year. While the term was coined by its disparagers, especially in light of the Brexit and US Presidential campaigns, the roots of post-truth lie deep in the history of Western social and political theory. This book reaches back to Plato, ranges across theology and philosophy, and focuses on the Machiavellian tradition in classical sociology. The key figure here is Vilfredo Pareto, who offered the original modern account of post-truth in terms of the 'circulation of elites', whereby 'lions' and 'foxes' vie for power by accusing each...