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 social Darwinism. Nonetheless, it is evident that Marx had a strong liking for Darwin's theory and a clear influence on his thought. Furthermore, when the second German edition of "Das Capital", was published (two years after the publication of Darwin's "Descent of Man, and Selection in Relation to Sex"), Marx sent Darwin a copy of his book with the following words: Darwin wrote back to Marx in October, thanking him for having sent his work and saying "I believe that we both earnestly desire the extension of knowledge". According to scholar Paul Heyer, "Marx believed that Darwin provided a materialistic