I was talking with an atheist friend the other day, and he made 3 interesting statements in the course of our conversation: 1) that he considered himself open-minded, 2) that there was nothing that a religious relative of his would ever be able to say that would convince him Christianity were true, and 3) that the two of us would probably never agree on either religion or politics, so there wasn’t much point to discussing them. Setting aside the oddity of saying one is “open-minded”and yet there is nothing an opponent can say to change one’s mind, let’s look at the 3rd statement.
Is dialogue between opposing sides pointless? Or worse, a Mission Impossible scenario with little chance of success and almost guaranteed failure? Can people of opposing views never come to agreement, except to “agree to disagree”? I would certainly hope not. What a disappointing world that would be if we were all condemned to continue in our set ways, with no hope of ever being able to exchange wrong beliefs for true beliefs. We all have wrong beliefs about different things at different times in our lives. But the act of learning often involves correcting those wrong beliefs and replacing them with truth. So it seems to me that if human learning is possible, then it is possible to change our beliefs. And if that comes about by another person sharing new knowledge with us that convinces us of its truthfulness, and it’s simultaneous incompatibility with our current beliefs, then we have the potential to genuinely benefit from our dialogue with an opposing view. As Thomas Aquinas said, “there is no greater act of charity one can do to his neighbor than to lead him to the truth.” Philosophy professor Peter Kreeft instructs future debaters reading his logic textbook that, “the aim of both parties must be simply to seek and find the truth,” and “The essence of the Socratic method is this logical cross-examination of an idea, following the argument wherever its inner logic takes it. Thus the impersonal laws of logic become a ‘common master’ rather than either person mastering the other, and the argument is not ‘me vs. you’ but ‘us vs. ignorance’; not ‘we are not together because we differ about what is true’ but ‘let us try to find the truth together.'” This does require humility, on the part of both sides, as it requires both to be willing to admit that we might have been wrong before, which most people (myself included) don’t like doing. The alternative, though, is possibly continuing in error, which isn’t very satisfying either, if we’re honest. But when the discussion is about the very existence of God, the cost of error is potentially much greater than simple dissatisfaction. If eternity hangs in the balance, then there can be no topic with more serious consequences or more far-reaching implications. If there is even room for debate, then it behooves one to not simply dismiss the question as a pointless topic.
So is it pointless to discuss these matters? It can seem that way, particularly when tempers flare. Yet with humility and honesty on both sides, sensitive discussions can be exceptionally fruitful. “But,” you might ask, “what about when that attitude is absent on one side?” While that makes it more difficult, I don’t see it as an insurmountable obstacle. And I say that having been that ungracious, defensive, “difficult person” in the past. I’ve also been the person getting steamrolled and losing the debate in spectacular fashion. But even then, it was never pointless. We tend to learn more from our failures than our successes, and those failures motivate me to be diligent to show myself a workman not needing to be ashamed, accurately handling the word of truth [2 Tim 2:15], always speaking graciously [Col 4:6], and better prepared the next time to give a reasonable and respectful answer for the hope I have [1 Pet 3:15].
Let me close by saying that talking about a “point” to a discussion entails a goal or purpose. If the goal is to “win” the argument, then there will be a combative or aggressive stance from the beginning that may sow the seeds of its own defeat, so that even winning that particular battle may lose the war. But if the object is pursuing truth together, as Kreeft suggests, then there can be no losers. And if that pursuit of truth leads to The Truth [John 14:6], whether immediately, in the course of discussion, or years later from a seed planted in loving debate, then “winner” doesn’t even begin to describe the outcome for the one rescued out of the fog of unbelief. And that outcome makes even Mission Impossible odds worth taking on. After all, our God deals in making the impossible happen.[Matt 19:25-26]
 As quoted in Socratic Logic, by Peter Kreeft, (South Bend: Ignatius Press, 2010), p.346.
 ibid., p.350.