by Zack Beauchamp

Pete Wehner enlists Plato in the cause:

None of us can fully extricate ourselves from the dominant opinions of our day. In this world we see through a glass darkly; we can know only in part. Some people perceive truth more fully than others, but truth is still fragmentary. The shadows on the wall never fully disappear. And so we are all in need of dialogue, of conversation, and even, from time to time, of correction. As iron sharpens iron, so one person sharpens another.