Thanks for the clarification. I'm still working on understanding what you're saying about "knowing." In your previous:
we don't know everything, and therefore can not know what truth is.
I don't think it's semantics to say to know something is to know that it is true. So, I can't reconcile the two: we can know something/we can not know what truth is.
Am I jumbling your meaning here? Would it be correct to restate your position as: We can know some things are true, but not all of what is true?
It's not semantics. It was not about knowing some things to be true, but knowing the truth. The way I see it, the only way to know the truth, i.e. to know the way the world truly is, and why it is, is to know everything there is to know, and we can't know that.