“If you were to ask how you might by rational discussion convince a committed fundamentalist of errors in his beliefs the answer would have to be that it is probably not possible. Any questioning of any detail of his dogma is an attack on God, on his sect, and on him personally. Show him blatantly obvious errors in the Bible and he will assume that a complete explanation exists; show him a conflict with observed fact and he will assume that the observations are in error, show him that a different interpretation of something is more logical, or better supported by facts, and he will just assume that you are wrong. If you urge him to check the facts out for himself he will say that there is no need, the Bible tells him the truth. The armour of dogma (which he will call faith) is impervious to fact or reason.”
Faith is belief in an idea when little or no evidence exists. Dogma is a belief held in spite of evidence. Which do you hold?
Reference:
http://www.users.bigpond.com/wyndkelm/Fundamentalism.html