Sciascia, btw, is one of the biggest thinkers and writers of '900. It is not really defined by his mafia-related novels and takes. He used to be friend with Borges, and was regarded as one of the top men in humanistic culture. Disclaimer: I was born in a town (Campobello di Licata) near his town (Racalmuto), but I'm not saying this because of this fact.

If you never read Sciascia, I suggest you starting from his last, tiny novel: "Una storia semplice". I believe there are English translations that can be found around as ebook or used on eBay.