Someone reinterpret these 2 paragraphs for me like I'm a 6 year old.
Words – spoken or written – have no inherent value unto themselves: they are arbitrary designations composed, in the case of speech-acts, of arbitrary segments of the sonic spectrum or, in the case of writing, arbitrary shapes (glyphs); in either case, they are representational, and abstract "ideas" (thoughts in the sense beyond mere spatial recognition) exist within a web of these predetermined values, conditioning – at the very least – how we're able to express ideas/meaning/value, if not even how we generate our internal conscious selves as we know them. This yokes us to an index of value – communication; language in all its various forms – that inhibits or prevents pure "originality" (in the sense I believe goldfly intends); furthermore, we don't communicate in a historical vacuum, but learn patterns of language that are conditioned by the various forms we use and encounter, themselves subject to histories (tradition), all of which further complicates the notion of the "original."
If there existed or exists anything previous to these circumstances, we can't really talk about it, because talking (discourse) is how we generate meaning, comprehend ourselves and the world, and perhaps even how we possess conscious, sapient selves. We can be agnostic about its existence, but for all practical intents and purposes, it doesn't exist.
However, this is just a baseline understanding of our human condition (at least as concerns "meaning"). Obviously
The Waste Land was a damn novel work of art, even if Eliot ripped off the title from a poem he'd read a few years earlier (his original choice:
He Do the Policemen in Different Voices), needed Ezra Pound to massively edit it before it was publishable (hence Eliot's introductory epitaph:
"For Ezra Pound: il miglior fabbro"), and moreover even if the poem itself functions as a sort of
palimpsest, a referential web in which is encoded the traces and marks of the body of tradition(s) that made possible this new-seeming ordering of words and ideas. In other words: while it was constrained from "pure originality" by the modes of understanding and communication which mediate it, all of us, and all our words, are so constrained by this imposition — which, to use the same logic applied earlier in this post, means for practical intents and purposes we can disregard it.
But at times we should still remember that all things have their antecedents.