Critically acclaimed historian Philipp Blom captures the seismic shifts that defined the interwar period and continue to shape our world today. He argues that the aftermath of the First World War was a period of bitter disillusionment and visionary progress in self-discovery, as artists, scientists and philosophers grappled with the question of how to live and what to believe in a broken age. A sweeping and vibrant history of Europe and America during the inter-war years.