The failure of many progressist Latin American governments, including the Brazilian one, has contributed to the emergence of populist right-wing governments in the 21st century. At a deeper level, this stems from theoretical and practical problems related to the complex and symbiotic relationship between development and democracy. To understand these problems the historical requisites, necessary to organize a society of solidarity in an unequal world, must be analyzed with greater incisiveness even if they are not related to the process of organic acceleration of capitalism. The Author proposes a reform of the State and of politics capable of promoting a new republican pact inspired by convivialism.