karlmarx "The Communist Manifesto" co-author Theorist on the "Sgt. Pepper" cover International Workingmen's Association organizer Coauthor with Friedrich Engels of "The Communist Manifesto" Coauthor of "The Communist Manifesto" Founder of historical materialism He wrote "Capital is dead labor" "Das Kapital" author Capital writer, initially keen to meet aristocrat, loses head and gets kiss after a month