A professor of economics, who predicted the subprime mortgage crisis in her doctoral thesis at the Sorbonne between 2006 and 2009, and the general secretary of a major bank analyse the role of banks in triggering the Great Depression and the Great Recession, as well as in helping companies out of the COVID-19 crisis and into the New Environmental Cycle. The book focuses on the dynamics of financial crises that led to the Second World War, Brexit and Donald Trump's presidency. It also chronicles the metamorphosis of the banking profession over the centuries and its reinvention by cooperative banks by and for their customers.