worldwide Public Broadcasting Service television show ever.3 The engaging host, Carl Sagan, regularly took potshots at religion in the name of science and boldly began the series with a dramatic announcement: “The cosmos is all that is or ever was or ever will be.” With just one sentence millions of people came face to face with philosophical naturalism, the view that nature is the ultimate reality. Whatever is natural is real; whatever is considered supernatural is unscientific, hence false. But