Recently, reading Edgar Allen Poe, I came across the phrase "thus much" and am struggling greatly to figure out its exact meaning. The first context in which it's written is in the poem A dream within a dream.
Take this kiss upon the brow!
And, in parting from you now,
Thus much let me avow -
You are not wrong, who deem
That my days have been a dream;
The second place in which he seemed to have used "thus much" in such a way was found while searching through the internet yesterday, so I'm just going to copy paste the part of the question from a forum where I'd found this.
I have thought proper to premise thus much, lest the incredible tale I have to tell should be considered rather the raving of a crude imagination, than the positive experience of a mind to which the reveries of fancy have been a dead letter and a nullity.
- Edgar Allan Poe - Message in a bottle
Now, "thus" in the first example could hold a similar meaning to "therefore", but surely he would have used a comma after it then, wouldn't he? "Thus much" in the second example, however, appears to mean something more along the lines of "this much", but again, why wouldn't he just write that instead, were that the case.