...The unremitting rigorous accuracy of our grammar must it will by now be sufficiently evident to many Members of necessity bear in fact out the larger rigorous accuracy and truth of everything we write.
For what can Logic in the end be but a superior sort of grammar?
There is nothing remotely "superior" about your first quoted sentence Dr Grew. It is surely one of the most perverse and clumsy (indeed negligent!) constructions I have ever noted.
a) Since it is (you claim) the rigour of your grammar that is unremitting, you should have used the adverb "unremittingly" (yielding the phrase "unremittingly rigorous accuracy), or at least you should have placed a comma after "unremitting" so as to show that it was an adjective (of equal weight to "rigorous") of "grammar". By not having done so you have deliberately caused confusion through poor punctuation and/or syntax;
b) since members of this MB are not members "of necessity" (but only by personal choice), it is obvious that a comma must be placed both before and after the words "of necessity", so as to avoid the false implication that their membership is compulsory;
c) your use of "in fact" has no place
within the verb "bear out". Furthermore, since anything at all perceived within what you write is not
fact but merely
observation, the use of the noun "fact" is mere assertion and over-emphasis. In any event, the words "in fact" need to be surrounded by commas (or alternatively parentheses) to avoid setting "false trails" for your readers;
d) having already confused us by the initial phrase "unremitting rigorous accuracy", you have ended by informing us of a supposed "larger rigorous accuracy". I am therefore confused as to the sense in which your supposed accuracy is either "unremitting" or "larger" (than what?).
By replacing all the mandatory punctuation you have deliberately omitted (so as even further to confuse your readers), your truly grotesque sentence should read as follows:
"The unremitting, rigorous accuracy of our grammar must, it will by now be sufficiently evident to many Members, of necessity, bear, in fact, out the larger, rigorous accuracy and truth of everything we write."
I don't somehow feel you would earn many literary awards for that!
Baz