 Three novels from this period, "Stranger in a Strange Land", "The Moon Is a Harsh Mistress", and "Time Enough for Love", won the Libertarian Futurist Society's Prometheus Hall of Fame Award, designed to honor classic libertarian fiction.Jeff Riggenbach described "The Moon Is a Harsh Mistress" as "unquestionably one of the three or four most influential libertarian novels of the last century".Heinlein did not publish "Stranger in a Strange Land" until some time after it was written, and the themes of free love and radical individualism are prominently featured in his long-unpublished first novel, "For Us, the Living