My tongue, every atom of my blood, form'd from this soil, this air,

from Walt Whitman – Song of Myself on Rap Genius

Meaning

The speaker is keen on emphasizing that an atom is an atom is an atom—-we are all comprised of basic matter, the stuff of the earth, the “stuff of stars.”

http://www.youtube.com/watch?v=iE9dEAx5Sgw

It also reminds us of the Christian creation story; Adam was formed from the dust of the ground, then brought to consciousness by the breath of life.

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