I heard Miller’s comment on O’Reilly, and I suspect it may indicate that his actual views are much closer to Objectivism than those he explicitly endorses on his radio show.  I recently heard him agree with a caller who was spewing that noxious bromide about how God (or the fear of same) is necessary for people to behave morally.  I question whether Miller would be familiar with the Fountainhead quote if he had not engaged in some significant study of Ayn Rand’s ideas.  The likelihood that Roark’s remark made that strong an impression on him while reading the novel seems remote.  The man obviously has a keen intellect.  I have a hunch that either he agrees with Voltaire (“If God did not exist, it would be necessary to invent him”), or else he is concealing his actual (Objectivist-leaning) views to avoid being stigmatized.