“It's the most powerful stuff in the universe.”
North and South Trilogy (1982-1987), Answer the Drum
Context: "Iron can destroy anything: families, fortunes, governments, whole countries. It's the most powerful stuff in the universe."
"Oh?" Orry's skeptical glance fell down on the Plain below. "You really think it's more powerful than a big army?"
"Without weapons - without this - there are no big armies."
Help us to complete the source, original and additional information
John Jakes 7
American historical novelist and fantasy writer 1932Related quotes

“Compound interest is the most powerful force in the universe.”
Variants: "... is man’s greatest invention" and "... is the eighth wonder of the world".
May add: "He who understands it, earns it; he who doesn’t, pays it."
This Snopes article http://www.snopes.com/quotes/einstein/interest.asp concluded that its status was uncertain, while this post from The Quote Investigator http://quoteinvestigator.com/2011/10/31/compound-interest/ concludes it is most likely a false attribution, since variants of the quote date back to at least 1916, with the early variants not being attributed to Einstein.
Disputed

“It is all just the universe doing its stuff, and we are the stuff it is being done to.”
Source: Levels of Life

“The Great Architect of the universe built it of good stuff.”
Source: Journey to the Center of the Earth (1864), Ch. XXXI in the French text, Tr. William Butcher (1992)

As quoted in Obituary by RayClaire at Glint (16 November 2011) http://r-c-d.diaryland.com/111117_11.html

Cause, Principle, and Unity (1584)
Context: The universal Intellect is the intimate, most real, peculiar and powerful part of the soul of the world. This is the single whole which filleth the whole, illumineth the universe and directeth nature to the production of natural things, as our intellect with the congruous production of natural kinds.

“There is neither spirit nor matter in the world; the stuff of the universe is spirit-matter.”
No other substance but this could produce the human molecule. I know very well that this idea of spirit-matter is regarded as a hybrid monster, a verbal exorcism of a duality which remains unresolved in its terms. But I remain convinced that the objections made to it arise from the mere fact that few people can make up their minds to abandon an old point of view and take the risk of a new idea. … Biologists or philosophers cannot conceive a biosphere or noosphere because they are unwilling to abandon a certain narrow conception of individuality. Nevertheless, the step must be taken. For in fact, pure spirituality is as unconceivable as pure materiality. Just as, in a sense, there is no geometrical point, but as many structurally different points as there are methods of deriving them from different figures, so every spirit derives its reality and nature from a particular type of universal synthesis.
A Sketch of a Personalistic Universe (1936)

“Whoever dies with the most stuff wins.”
Part 5
number9dream (2001)