Not all doubt is bad.  Some of the world’s leading skeptics of Christianity have eventually become its leading advocates.  Such a person was C. S. Lewis, the late professor of Medieval English at Cambridge University.  A combination of issues--the horror of war, seeing some of his best friends die, wondering about the hereafter--made Lewis first doubt his faith, then search for answers.  He found them, too, in the pages of Scripture. What’s good about doubt?  Consider the following five observations, and then make your own decision.