In “How To Live a Lie,” William Irwin considers whether you can live as if there are moral truths, as if God exists, and as if you have free will even if you believe none of these things is true.  His conclusion? Morality and God, no … but free will, yes. “Well, I cannot believe in free will, but I can accept it. In fact, if free will fictionalism is involuntary, I have no choice but to accept free will. That makes accepting free will easy and undeniably sincere. Accepting the reality of God or morality, on the other hand, are tougher tasks, and potentially disingenuous.”