Showing my age in this reply: Steppenwolf, by Herman Hesse made a big impact on me. I read and re-read it over 30 years, long before I had any Aspie self-awareness. Harry Haller (the main character) is stultified, depressed and appalled by the society in which he lives, it's petty conventions, hatred of difference, small-mindedness. Hesse used the novel to suggest that though the danger for "misfits" like Harry was suicide, the answer was to become more consciously himself, to explore and expand his own unique possibilities, that "trying to fit in" is a living suicide of the self.
Hesse said in interviews, much later after this novel was published, that it was his most misunderstood novel, that sadly, many young people saw it as encouraging them to suicide. Obviously it didn't have that effect on me. It was quite a comfort at the time.