Mateus and João interview Professor David Lay Williams from DePaul University (USA) to talk about his book, "The Greatest of All Plagues: How Economic Inequality Shaped Political Thought from Plato to Marx" (Princeton University Press, 2024). Drawing from great thinkers of the Western Canon, David shows how inequality has always been considered a keen political problem in the West - until the rise of Capitalism and, with it, the hopes that an affluent world would cope with being unequal.