Pillar and Fire - edit2

[Fearful Symmetry]

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Many early mornings to the south
I see a rising pillar of white cloud
superimposed, lean mushroom or lone flower,
on fading stars or rainbow-borrowed blue.

This reads like a step in the right direction to me   , but where “mushroom cloud” is such a known image it might be worth staying away from fungi altogether  

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Like that in the Testament this sign
shows presence of unseen, upholding power:
an ark of electricity which warms
and cools and unifies each hearth and heart.

I'd like a better word than "unifies,"  that would express networking or the grid, but it hasn't come yet.

Don’t stop hunting on my account but I like unifies    

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Re Dylan Thomas:  some borrowings are more brazen than others.  I once concluded an essay on Social Security with,

"...consists of a carrot and a stick, and the string between them is fraud."  Recognize it?

You got me, I’m not familiar with that one.