LOL. Gee, since being a teenager, that's been one of my favorite teachings. I don't think Gibran means that joy will obliterate the furrow of sorrow; just that the depth of a "shadow" can make the light of happiness that much brighter, and more precious.
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Ellis,
In the above context, I used the word "theistic," but your, "deeply moved and awe-struck" is a much better and more descriptive synonym. I think it is that simple translation that allows me to understand and experience (perhaps only some of) what others mean when they say they "believe in...."
smile

Pyrolysis creates reduced carbon! ...Time for the next step in our evolutionary symbiosis with fire.