The difference between "Christian forgiveness" on a personal level, and a national level
"I know, sir, how well it becomes a liberal man and a Christian to forget and forgive. As individuals professing a holy religion, it is our bounden duty to forgive injuries done us as individuals. But when the character of Christian you add the character of patriot, you are in a different situation. Our mild and holy system of religion inculcates an admirable maxim of forbearance. If your enemy smite one cheek, turn the other to him. But you must stop there. You cannot apply this to your country. As members of a social community, this maxim does not apply to you. When you consider injuries done to your country your political duty tells you of vengeance. Forgive as a private man, but never forgive public injuries. Observations of this nature are exceedingly unpleasant, but it is my duty to use them."
Life, Correspondence and Speeches, William Wirt Henry, editor (New York: Charles Scribner's Sons, 1891), Vol. II, p. 490