"Beware the ideas of Marx.", says TEd. And he is quite right, of course (well - certainly to the right of Marx) as the following anecdote will demonstrate.

Marx's friend, Freidrich Engels, was left a house in his uncle's will. He and Marx went to inspect and explore his new property.
On reaching the attics, Engels peered into the water tanks, gave a startled exclamation, put his arm into the water and withdrew two ancient fiddles. "Great Scott, Marx," he exclaimed, "Do you think they might be valuable?"
"No," replied his friend, "They are merely the violins inherited in the cistern."