The truth is there is really no Dark Side to Christianity. If it is uncompassionate, unkind, bigoted, hateful, hypocritical, selfish, prideful or ignoble it is simply not Christian. To call it so is to dress a wolf in sheep’s clothing.
He (Lincoln) differed from fanatical moralists primarily in that he was always perplexed. No sooner did he believe he was doing God's will that he began to admit that God's purposes might be different from his own. In short, he never forgot the men's contrast between the absolute goodness of God and the faltering goodness of all who are in the finite predicament.