When we encounter new details of our world we fill in more of the spaces. When we discover details that don't seem to fit with our view of the world, we have a kind of "crisis of faith," even if our worldview is not especially religious. We're forced to redraw our "map" a bit.

Nowadays, people have a habit of relativizing religion, reducing it to "your truth" versus "my truth" versus "their truth," and that's the end of it.

There is no neutral ground when it comes to the tolerance question. Everybody has a point of view she thinks is right, and everybody passes judgment at some point or another. The Christian gets pigeonholed as the judgmental one, but everyone else is judging, too, even people who consider themselves relativists.

Christianity is actually "true Truth," as Francis Schaeffer used to put it. God really does exist, Heaven actually is real (along with Hell), Jesus really did live and He did the things the historical records - the Gospels - say He did, the resurrection of Christ really happened, and there really is hope each of us can count on for "the kind of perfect world our hearts have always longed for."

Every worldview has its ambiguities - debatable elements that people simply will not see to eye on. There's nothing wrong with that as long as the disagreement is principled and dignified. I actually think that arguments - as opposed to quarrels - are good things because they're the best way to figure out what's true. Share your reasons, listen carefully to each other, be nice, and may the best idea win.

If the unborn is a human person, no justification for abortion is adequate.

If Darwinism is true, then there is no purpose or meaning to life, there is no morality, there's no qualitative difference between humans and animals, there's no life after death, and there's no purpose to human history. Now, are you trying to tell me that it doesn't really matter if people believe we evolved or not?