The true story of Léonce Rosenberg, the living art dealer. How did he associate his name with Cubism? What works made up his incredible collection? What was his idea of ​​the profession of art dealer? To talk about it, Stéphane Bern receives Giovanni Casini, art historian and curator, with Juliette Pozzo, of the exhibition “Dans l’appartement de LÉonce Rosenberg” at the Picasso Museum in Paris until May 19, 2024.