Harpo Marx painted "his" portrait. In 1955, Harpo made an appearance on the sitcom "I Love Lucy," in which he and Lucille Ball re-enacted the famous mirror scene from the Marx Brothers movie "Duck Soup" (1933). In this scene, they are both supposed to be Harpo, not Groucho; he stays the same and she is dressed as him. About this time, he also appeared on NBC's "The Martha Raye Show". Harpo recorded an album of harp music for RCA Victor ("Harp by Harpo", 1952) and two for Mercury Records ("Harpo in Hi-Fi", 1957; "Harpo at Work", 1958). Harpo and Chico played a
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