Marx Brothers made a guest appearance to introduce the "Tonight Show's" new host, Johnny Carson. Around 1960, the acclaimed director Billy Wilder considered writing and directing a new Marx Brothers film. Tentatively titled "A Day at the U.N.", it was to be a comedy of international intrigue set around the United Nations building in New York. Wilder had discussions with Groucho and Gummo, but the project was put on hold because of Harpo's ill-health and abandoned when Chico died in 1961. He was 74. Three years later, on September 28, 1964, Harpo died at the age of 75 of a heart attack
Influences on Karl Marx financiers to workers. It was Proudhon's book "What Is Property?" that convinced the young Marx that private property should be abolished. In one of his first works, "The Holy Family", Marx said: "Not only does Proudhon write in the interest of the proletarians, he is himself a proletarian, an ouvrier. His work is a scientific manifesto of the French proletariat". However, Marx disagreed with Proudhon's anarchism and later published vicious criticisms of Proudhon. Marx wrote "The Poverty of Philosophy" as a refutation of Proudhon's "The Philosophy of Poverty" (1847). In his socialism, Proudhon was followed by Mikhail Bakunin. After Bakunin's