Oh please don't start that kind of nonsense.
It's not nonsense, it's realistic. All scientist, and people who base their lives on logic, and current knowledge are limiting themselves to what we know, which is by nature, always going to be limited.
I asked a member here once to define love, and he gave me some lengthy scientific description of how we think our brains process love. I told him to go home and tell his wife that, instead of I love you.
More likely, we would have absolutely no useful way of describing our beliefs to each other, and anyone who wanted to ascribe to a belief, or lack thereof, would have to be a fundamentalist, who could admit no possibility of being wrong.
It's ok, I will go along with your description, and his. I was just making a point.