Harpo Marx on Harpo. Harpo later played the role in Los Angeles opposite Woollcott, who had inspired the character of Sheridan Whiteside. In 1961 Harpo published his autobiography, "Harpo Speaks". Because he never spoke a word in character, many believed he actually was mute. In fact, radio and TV news recordings of his voice can be found on the Internet, in documentaries, and on bonus materials of Marx Brothers DVDs. A reporter who interviewed him in the early 1930s wrote that "he [Harpo] ... had a deep and distinguished voice, like a professional announcer", and like his brothers, spoke with a New
Karl Marx and the Close of His System their "positivist narrowness". The Marxist economist Paul Sweezy rejects Bawerk's view that the theory of value must be abandoned. However, he considers "Karl Marx and the Close of His System" to be the best statement of the argument that the fact that the law of value is not directly controlling in capitalist production requires the rejection of the theory of value. Karl Marx and the Close of His System Karl Marx and the Close of His System () is a critique of Karl Marx's economic theories by the Austrian economist Eugen Böhm von Bawerk, published in English translation in 1898.