Oswald Spengler

Oswald Arnold Gottfried Spengler was a German historian and philosopher of history whose interests included mathematics, science, and art. He is best known for his book Der Untergang des Abendlandes (English: The Decline of the West ) published in 1918 and 1922, covering all of world history. Spengler's model of history postulates that any culture is a superorganism with a limited and predictable lifespan.