In debates or discussions about the existence of God, I'm often asked, "What if you're wrong and there really is a God?" These questioners, who assume that God belief is of ultimate importance, are perhaps unknowingly applying Blaise Pascal's 17th-century attempt to defend Christian belief with logic.
In his "Pensees," Pascal said, "If there is a God, He is infinitely incomprehensible, since, having neither parts nor limits, He has no affinity to us. We are then incapable of knowing either what He is or if He is." Pascal should have stopped there, but he didn't. He concluded that it's safer to believe in God because of what became known as "Pascal's Wager": If God does not exist, we will lose nothing by believing in him; but if God does exist, we will lose everything by not believing.