"A fractious Europe, a failing currency, a challenged economy, populist parties on the rise, a divided left, migration from the east, an atmosphere of fear combined with social and sexual liberalism. The parallels between Britain today and Germany in the 1920s may well make this a compelling moment to revisit those postwar German thinkers who gathered in what was known as the Frankfurt school for social research – something akin to a Marxist think tank, [...] Little wonder, given the history of the 20th century, that the Frankfurt school gave us intellectual pessimism and negative dialectics. Jeffries’s biography is proof that such a legacy can be invigorating."  

– Lisa Appignanesi, Guardian