Dear Ducknutz,
The quote comes from the Addam's Family
As to your other question, without a link I can't address "The Divine Mother" as I am not familiar with it in the context you are using.
I can say that the Mother figure has played a prominant roll in almost every major religion that humans have devised, simply because the birth/creation allegory is too powerful to deny.
Ancient statues and fetishes of voluptuous women have been excavated from archeological sites all over the world. From the ancient Greeks, we have the legend of Geia giving birth to the world. Hindu's call Kali their "Divine Mother" while Christians (especially Catholics) have their own "Divine Mother" in the form of the Virgin Mary, mother of Jesus.
So the term "Divine Mother" is hard to pin down out of context
Edited to add:
is this what you are refering to?
http://divinemother.net/
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Now to your other question: Yes, I do believe.
But as I get older and experience more and more of the world, paradoxically I've realized that I know very little about God. But those same experiences convince me and my scientific mind that all we see and know is far from all there is to see and know.