> Oh wow, I'm sad. This is not a sadness per se, it's the by-the-book nostalgia. Nostalgia is a sentimentality for the past, typically for a period o

> Oh wow, I'm sad. This is not a sadness per se, it's the by-the-book nostalgia. Nostalgia is a sentimentality for the past, typically for a period or place with happy personal associations.