My own contribution is to reprint this Sagan related urban legend.
Once upon a time, Carl Sagan met the pope (John Paul II) and asked him what he would do if somehow science convincingly and irrefutably disproved the foundations of Christianity. The Pope proceeded to lecture Sagan for about 15 minutes about why this was impossible.Also I'd like to add a link to this site which posits that Sagan was the reincarnation of 18th century astronomer David Rittenhouse.
Later, Carl met the Dali Lama and asked him the same question about Buddhism. His reply was that he would immediately tell everybody, because it would mean millions of Buddhists would be living their lives incorrectly.
I wonder what Carl Sagan would have thought of that, as a renowned sceptic he would probably have laughed like I did.


