Nostalgia for Unity One of the causes of our suffering comes from the presence, in the deepest part of ourselves, of a kind of nostalgia for unity that sometimes surfaces with great force not only during infancy and adolescence but also in adulthood. This powerful feeling of unity with the world is generally interpreted disfavorably. Adults speak of daydreams, of distraction, of merging states more or less suspicious and destined to disappear over time. And unfortunately this is, in general, how it happens.