NHaH: I think you need to more firmly distinguish between the particular claim ("The cat is white") and the belief in the claim (I believe it is nearly certainly true that "the cat is white"). Much post-modern waffle on truth and facts arise by confusing the two, for instance it is argued that since we can never know for certain that a cat is white (the second type of claim) the first type of statement does not make sense, or since two people can have different beliefs about the cat (say one can think the cat is white and the other black; again a claim of the second type) we cannot make sense of the factual statement "the cat is white".
Once this distinction is made, and once we accept knowledge is not certainty nor have to be, a lot of philosophical deadwood is swept away.