"NO MUSE IS GOOD MUSE To be an Artist you need talent, as well as a wife who washes the socks and the children, and returns phone calls and library books and types. In other words, the reason there are so many more Men Geniuses than Women Geniuses is not Genius. It is because Hemingway never joined the P.T.A. And Arthur Rubinstein ignored Halloween. Do you think Portnoy's creator sits through children's theater matinees--on Saturdays? Or that Norman Mailer faced 'driver's ed' failure, chicken pox or chipped teeth? Fitzgerald's night was so tender because the fender his teen-ager dented happened when Papa was at a story conference. Since Picasso does the painting, Mrs. Picasso did the toilet training. And if Saul Bellow, National Book Award winner, invited thirty-three for Thanksgiving Day dinner, I'll bet he had help. I'm sure Henry Moore was never a Cub Scout leader, and Leonard Bernstein never instructed a tricycler On becoming a bicycler just before he conducted. Tell me again my anatomy is not necessarily my destiny, tell me my hang-up is a personal and not a universal quandary,