Battling Defeater Beliefs

Recently, I came across an article by Tim Keller which I found to be very helpful in regard to apologetics/evangelism. The article contains some great thoughts about sharing the gospel in various cultures. Here is an except from the article:

Christianity is disbelieved in one culture for totally opposite reasons it is disbelieved in another. So for example, in the West (as we will explore below) it is widely assumed that Christianity can't be true because of the cultural belief there can't be just one "true" religion. But in the Middle East, people have absolutely no problem with the idea that there is just one true religion. That doesn't seem implausible at all. Rather there it is widely assumed that Christianity can't be true because of the cultural belief that American culture, based on Christianity, is unjust and corrupt. (Skeptics out to realize, then, that the objections they have to the Christian faith are culturally relative!) So each culture has its own set of culturally-based doubt-generators which people call 'objections' or 'problems' with Christianity. (Note: The type in bold was underlined in the original.)

The entire article is available here.