Ok here is the quote From a letter of JRRT to Milton Waldman, 1951,
Tolkien talks about the motives on his work:
"...Anyway all this stuff is mainly concerned with Fall, Mortality, an the Machine.... It may become possesive, clinging to the things made as its own, the sub-creator wishes to be lord and
god of his private creation. he will rebel against the laws of the creator-especially against mortality. both of these (alone or together) will lead to the desire of power, for making the will more quickly effective, - ans so
and so to the Machine (or Magic). By the last I intend all use of external plans or devices (apparatus) instead of developments of the inherent inner powers or talents- or even the use of these talents with the corrupted motive of dominating: bulldozing the real world, or coercing other wills. The Machine is our more obvious modern form though more closely related to Magic than is usually recognised.
I have not used "magic" consistently, and indeed the Elven Queen
Galadriel is obliged to remostrate with the
Hobbits on their confused use of the word both for the devices and operations of the Enemy, and for those of the
elves. But the elves are there to demostrate the difference. Their magic is art, delivered from many of its human limitations: more effortless, more quick, more complete (product and vision in unflawed correspondence)"