The benefits and risks of nostalgia: analysis of a fictional case with special reference to ethical and existential issues.

Nostalgia is portrayed as being, in some sense at least, ultimately beneficial for the protagonist of Sömnlös. This is congruent with recent psychological research. However, the story also shows that nostalgia may lead to problematic behaviours, at least when viewed from a virtue ethics perspective. Hence, nostalgia is both what leads the protagonist into ethically problematic behaviour and that which (paradoxically) ultimately saves him from his initial lack of courage, justice, temperance and practical wisdom. Moreover, the protagonist does not only "grow" ethically but also existentially. Hence, the novel opens up the possibility that insomnia and nostalgia might be viewed as bearers of important existential information (cf. sociologist of religion Peter L. Berger and his concept of "signals of transcendence").