I speak of reason and truth as human constructs. If we cannot be sure that we have free will, then, while truth exists in abundance, we have no ability to valid

I speak of reason and truth as human constructs. If we cannot be sure that we have free will, then, while truth exists in abundance, we have no ability to validate it. I say this all a bit tongue in cheek because I absolutely believe that we have free will. And in any case, to suggest otherwise to me would seem like a cop-out for the consequences of my own decisions. The first 3-4 chapters of the book Miracles by C.S. Lewis cover this topic pretty well in my opinion, even if you're not spiritual-minded.