There is a novel titled "I Know This Much Is True", and I find the title puzzling.
I know this much is true.
At first, I parsed it as
I know this much it's true.
where this much shows the degree of (un)certainty, serving as an adverbial phrase. As in, "I definitely/certainly know it's true" with the order changed a bit.
Then I noticed it's "is true", not "it's true", which leaves me with this sentence structure.
I know (that) this much (=something) is true (=something).
What could this much refer to? Is it something contextual and I need to read up on the novel?
I am thinking of
I know that (giving/receiving/having) this much (love/care/something uncountable) is possible/true.
but there is no reasonable grounds for that...