Rate five things you know, from any shelf. Your archetype shows up in about a minute, and gets sharper with every log.

Franz Erdmann Mehring was a German communist historian, literary and art critic, philosopher, and revolutionary socialist politician who was a senior member of the Spartacus League during the German Revolution of 1918–1919. He authored Karl Marx: The Story of His Life (1918), which was long considered the classical biography of Marx.
German communist historian, philosopher, and politician (1846–1919) · From Wikipedia