Many atheists and skeptics contrast faith with evidence, with reason, with the mind. What is the relationship between faith and reason?

The claims of Christianity draw a line in the sand. The word "ontology" and what it means regarding both God's and our existence help us understand why different views of the afterlife can't all be true.

Many people today attempt to figure out how to be a Modern (Enlightened) person and affirm Christianity at the same time. Why can doing so cause us to go about life as a practical agnostic?