This is a sort of teaser for WDPLAC pt 37, William Lane Craig.
The contrast between the metered maturity of Carl Sagan and the sneering school child of William Lane Craig is stark.
Craig, all but gleeful to dismiss those who merely ask for consistency between his treatments of unknowns.
Where did the universe come from? (begging the question to begin with), but Craig handwaves and uses his 'god' to explain this unknown.
However rejects the idea that this god needs a cause.
Sagan of course hits the nail on the head straight away. Why not just be honest and say its an unknown. Why all the posturing to replace an unknown with 'god'. What is wrong with the humility of merely saying 'we do not have a good explanation yet. It is an unknown.