Nostalgia (n.) is not justified by the beauty of the past. Nostalgia produces beauty as its effect.
Nostalgia (n.) is the cheap reflex of treating whatever has just happened as the chief enemy, then seeking an imaginary past happiness people never had.
Nostalgia (n.) invents happiness people never had: mourn love after the television goes off, and forget the eighteen-hour days and six to a bed.
Nostalgia (n.) is a cheap archaism: people mourn the golden age before television, forgetting eighteen-hour workdays and six to a bed — if one had a bed.
Nostalgia (n.) for the past in the nineteenth century — the lyrical halo, the passion for documents and traces — is the surface sign that man had been emptied of history and was beginning to seek a historicity in the depths of his own being.