C.S. Lewis on Loss of Faith
Mere Christianity (New York: Simon and Schuster, 1996; orig. 1943), p.127We have to be continually reminded of what we believe. Neither this belief nor any other will automatically remain alive in the mind. It must be fed. And as a matter of fact, if you examined a hundred people who had lost their faith in Christianity, I wonder how many of them would turn out to have been reasoned out of it by honest argument? Do not most people simply drift away?