Can one be nostalgic for the home one never had? Why is it that the age of globalization is accompanied by a no less global epidemic of nostalgia? Can we know what we are nostalgic for? In the seventeenth century, Swiss doctors believed that opium, leeches, and a trek through the Alps would cure nostalgia. In 1733 a Russian commander, disgusted with the debilitating homesickness rampant among his troops, buried a soldier alive as a deterrent to nostalgia...