I have learned quite graphically over the past two days that differences of opinion over Israel and the Palestinians are--if possible--more polarizing than differences over abortion rights or gay marriage. There appears to be a sort of absolute moral calculus involved in contemplating that confict that eliminates all possibility of reasonable discourse between otherwise rational people. So be it. Strangely enough, this got me to thinking about another moral absolute for many, many of my fellow citizens: the idea that the United States and her citizens represent something unique among all the nations and peoples of the world, a beacon of freedom, a nation given a special mission by God to spread democracy and human freedom around the world.... A city on a hill.... The greatest country God gave any people... Manifest destiny.... They hate us for our freedom.... As far as I know (and most authorities agree with me), the term American Exceptionalism was coined by the Frenchman, Alexis...