If there exist an infinite number of modes of thought as you posit, then yes it is possible that the best one is not among the ones we know of now.
I don't really think of it this way though, because logic is not supposed to give us something new, not supposed to give surprising conclusions. Logic formalizes the steps you can take to arrive at valid conclusions. However, what constitutes valid conclusions is ultimately based on our intuitions, it is what the logic is founded on (comparable to how mathematics is ultimately based on accepting axioms).
The "empty" is the un-defined. Direct experience, that which can't be talked about, labeled or categorized. That (this) which has always existed, and always will.
The void is that which can't be named. It's all around you! You can never leave it because it is you, stretching from your center in all directions.
There are no contradiction here, because you need a logical layer over reality to have contradictions.
Tat twam asi!
Here are some links to people that go directly to the essential: http://www.eckharttolle.com http://www.adyashanti.org http://www.headless.org
> Just because it is a contradiction doesn't mean it is wrong
That's basically precisely one of the points of this article.
Then what is a mode of thought, and what would constitute superiority to the many and varied plausibility-preserving logics we've invented thus far?