Arthur Julius Marxwas an American author, a former nationally ranked amateur tennis player, and son of entertainer Groucho Marx, and his first wife, Ruth Johnson. He is named after Groucho's brother Arthur "Harpo" Marx... (wikipedia)
People would ask me, 'Is he as funny at home as he is in the movies?' ... I would have to answer, 'Well, he can be funny. But he is also very serious. He has insomnia and if we him up early, he would bawl the hell out of me'.
(My father) he would be surprised to know he was still popular today, ... He told me, when he was quitting the Marx Brothers, (that) their kind of comedy was old-fashioned.
He's such a good actor and he loves the Groucho character so much he made a study of him.
The last time I flew with him was a year ago, and I definitely did not see the kind of person who took unnecessary risks.