Fetishism of budgetary balances, fanaticism of free trade, contempt for community preference, subversion of politics by the economy, of States by the markets, of the public by the private ... How can one be European? Europe is today stuck in a triple failure. Failure of monetary union while the divergence between North and South continues to widen. Failure of economic union, while competition between member countries continues. Failure of a political union when Europe prefers to abandon its governance to independent authorities rather than favoring consultation between States. Beyond the sterile confrontation between sovereignty and federalism, Jean-Marc Ferry suggests exploring a third way, co-sovereignty:the possibility of coordinating in order to jointly conduct public policies defined under the authority of a legitimate institution, involving national parliaments in the decision-making process. Jean-Marc Ferry also pleads for the establishment of a European social base, based on the dual system of a universal basic income and the development of a new sector of personal and autonomous activity. Finally, he returns, like a philosopher, to the very meaning of European construction in the face of the ever-present threats of poverty, war and barbarism, a European social base, based on the dual system of a universal basic income and the development of a new sector of personal and autonomous activity. Finally, he returns, like a philosopher, to the very meaning of European construction in the face of the ever-present threats of poverty, war and barbarism.