"Sometimes differences arise partly from incomplete information. We are finite. And we should admit that there are cases of uncertainty. But often the differences become exacerbated because of sinful inclinations underneath the surface, which incline us to prefer our own ideas and not to submit to what is less comfortable. We must be cautious about accusing anyone else of sin. We don't know people's hearts. But we must also avoid being naïve about the subtlety of sin and the corrupting effects of sin on the mind - our own minds, not only the mind of the other fellow."