This is a great interview that is a must-read, it starts like this:
Mars Hill: Philip, you grew up in a fundamentalist family in the Bible belt, an environment which you described as having "vaccinated you against spiritual truth." What does this mean?
PY: Well, a vaccination is when you get a small dose of something that is very similar to a real disease organism. The smallpox vaccination started out with cowpox, but it was close enough to smallpox so that if you got a cowpox vaccination you wouldn't get smallpox. When smallpox came around, then your body automatically rejected it because it recognized cowpox as an enemy and found ways to cope with it. I think that's what happened to me growing up. The words of the Bible were used but they were misused.
To read the whole thing, go to: A Conversation with Philip Yancey. Michael Cusick probes the heart of one of Christendom's best thinkers. Copyright © 1994 Mars Hill Review 1 Founded in 1994 · Premier Issue: pgs 89-102.
(Via Christian Book Classics)