“It is conceivable for a writer to take the pulse of his era and make it come alive in language and images, yet still be out of his depth when it comes to palpable engagement with the world, although this constellation is exceedingly rare. Far more often someone who is truly at home in two worlds is misunderstood as being ‘out of touch’ in the public, social cosmos, which he shapes and endures in combination with others, and in an interior psychic space dominated by feelings, dreams, fantasies, associations, and ideas, which he inhabits alone. Anyone whose experience inside his head offers as vast and constant a stream of impressions as the world outside cannot stay focused on the here and now. But where is he then? In a different realm.
An individual who appears to be out of touch with reality is rarely in the privileged position of being able to open and close the subtle locks between inside and outside at will. The vortex pulling him inside his head is always palpable, but the reality principle demands that he remain perpetually alert; people expect him to limit himself to things that can be communicated. Anyone who starts talking about daydreams on the street, in a store, or at the workplace alienates people, no matter how intense and meaningful those daydreams are. He remains alien because he understands and acknowledges a second world, and for the most part, and to his detriment, he remains just as alien in that interior world for the same reason. He is present, but neither here nor there.
That condition can culminate in insanity, and Kafka justifiably feared winding up insane throughout his life. But it has little to do with the accomplishment society expects of the individual. Someone who is alienated from the world might function perfectly well as a craftsman, attorney, teacher, or politician, or as a vice secretary of an insurance institute, and his struggle to balance himself—poised like a man with one foot off the ground—can easily remain hidden from view, without a trace, as it probably has in thousands upon thousands of brains.”
—Reiner Stach, Kafka: The Years of Insight