By the respectable terms of the modern literary profession, novelists do not preach. And, in fact, there has probably not been a less respectable novelist among the irrefutably enduring writers of our time than Ayn Rand: philosopher queen of the best-seller lists in the forties and fifties, cult phenomenon and nationally declared threat to public morality in the sixties, guru to the Libertarians and to White House economic policy in the seventies, and a continuing exemplar or Wilde's tragic observation that more than half of modern culture depends on what one shouldn't read.