"I can do whatever I want with my money; it's mine." Well, that's not exactly true. It's yours, yes. But you can't do whatever you want. The more you have, the clearer it becomes that you've accumulated it thanks to the collective work of many other people, thanks to the existence of infrastructure and public services, thanks to a legal system that ensures the proper functioning of the economy. Therefore, you have to pay taxes; you have an obligation to contribute to maintaining all of this. You can't just go about your business, without taking into account the environment that has favored you. Economist Thomas Piketty states: "You are not alone in the world, and you can't simply say, 'This money is mine.'"

Michael Sandel (Minneapolis, 1953) is one of the most renowned academics in the study of economic inequalities, their roots and their social, cultural and political consequences. With a slow-paced but forceful argument, Sandel addresses theCompanies at the Hotel Casa Fuster in Barcelona to talk aboutEquality, what it means and why it matters (Edicions 62, translated into Catalan by Imma Estany), a book that puts on paper a conversation between him and the French economist Thomas Piketty –another of the world's leading figures in the field of economicsstudy of equality–, in which they reflect on what to do to achieve societies and a world in which wealth and social justice are more balanced.