Ayn Rand
She published several popular books in the United States during the mid-1900s, including her two best-selling novels, Atlas Shrugged and The Fountainhead, plus We the Living and Anthem. Her novels promoted a viewpoint of laissez-faire  capitalism as a political and social goal. It is a kind of political philosophy known in the U.S.A. as libertarian conservatism. She called this philosophy 'objectivism'.