Europe is worried. This is the time to listen to the words of the greatest European philosopher of our time, known for his vigorous thinking and iconoclastic ideas. In four essays on the themes of immigration, Brexit, social cohesion and nationhood, he defends the reality of Europe, analyses the rise of populism and its simplistic view of the world, denounces the absurdity of ghettos and reminds us of the vital need to fight cynicism.