Brain Snacks: Tasty Tidbits of Knowledge
One of Marx's most famous lines is: The philosophers have only interpreted the world, in various ways; the point is to change it. (Source.)
According to Friedrich Engels, Marx's collaborator, Karl, displeased with interpretations of his work in France, said, "If anything is certain, it is that I myself am not a Marxist." (Source.)
A first edition of a volume of Das Kapital sold for $40,000, becoming quite the commodity fetish, as he'd say. (Source.)
Marx was in debt much of his life, leading his mother to say that she wished he would accumulate capital, not just write about it. (Source.)
There's a musical version of Das Kapital. Seriously. The writers consulted an economist to make sure it stayed accurate. (Source.)
There's also a manga comic version of Das Kapital. (Source.)