Scholarly interest in the topic of nostalgia has come late to discussions of the workings of memory, a popular topic in contemporary historiography, but its moment may at last have arrived, bringing with it perspectives unappreciated a generation ago. As an emotional response to time’s passage, nostalgia has long been viewed with suspicion. From the dawn of the modern age, critics have explained that it plays into life’s illusions, drifting into sentimental idealization of a past on the fast track to obsolescence. From the earliest critical commentaries on its nature in the late seventeenth century, nostalgia has been equated with homesickness, futile longing for lost places, lost times, and lost causes. For the most part, it was diagnosed as a psychological disorder that immobilized individuals susceptible to the tug of its emotions. It was in this guise that discussion of its nature entered the lexicon of medical discourse during the nineteenth century. The impairments of those who suffered from its sadness were real. The remedy was to awaken them to life’s present realities, and so to teach them to adapt with vigor to their own times.