While Clarke made his point very well in his fiction - and I
*do* love his fiction, I like Sagan because he successfully taps
into what they call the "religious centers" of the brain - that
sense of Awe and Wonder and applies it to whatever it is that
*he personally* was in awe and wonder about.
Sagan's agenda was anti-fraud but pro-human... one of the last
great Humanists.