The Heritage of Our Times by Ernst Bloch (Marxist Philosopher and Political Theorist)
One of the most compelling aspects of this work is a contemporary analysis of the rise of Nazism. It probes its bogus roots in German history and mythology at the very moment when the ideologies of Blood and Soil and the Blond Beast were actually taking hold of the German people.
The breadth and depth of Bloch's vision, together with the rich diversity of his interest, ensure this work a place as one of the key books of the 20th century.