This is a great question for a Monday morning – or any other, for that matter. Or any time at all.
The problem with the statement, though, or with any statement one can make, is that “the more you know, the less you can be sure of”. Because as @LuckyGuy notes, you can believe yourself to be correct in a statement because of limited knowledge and insufficient qualifiers – but that doesn’t make you “right”. And you can be in the camp of “97% consensus”, to call a number out of thin air, but if the 97% aren’t correct in their statements, their qualifiers and their own understanding, then they aren’t right, either.
Even the statement in the OP is not “quite” correct, because we could more properly say that “truth IS reality”, and while a “true statement” may correspond to reality, it’s probably not possible to find “truth” in words, because of so many factors, starting with the impossibility that any two people can agree on the exact definitions of the words, and continuing through the differences that occur in our own minds in processing the definitions and meanings and simply hearing or seeing the words themselves. There’s no “truth” in a statement (even this one) beyond the closest approximation of reality.
And there’s a lot of uncertainty in our perception of reality, before we even start to speak of it.