To win any war, the three most necessary things to know are (1) that you are at war, (2) who your enemy is, and (3) what weapons or strategies can defeat him. You cannot win a war (1) if you simply sew peace banners on a battlefield, (2) if you fight civil wars against your allies, or (3) if you use the wrong weapons.
Here is a three point checklist for the culture wars. If you don't know that our entire civilization is in crisis, I hope you had a nice vacation on the moon....
Seriously, this is a great essay, and I encourage you to read it. Its quite a stomach full....you may not like what he's saying.... but its certainly something to think about this Lent.
Note - Kreeft is not advocating 'circling the wagons' but giving ourselves body and soul to Christ FOR BATTLE!