If a man will begin with certainties, he shall end in doubts; but if he will be content to begin with doubts he shall end in certainties. – Francis Bacon
Whether your faith is that there is a God or that there is not a God, if you dont have any doubts you are either kidding yourself or asleep. Doubts are the ants in the pants of faith. They keep it awake and moving. – Frederick Buechner