
One, No one, and a Hundred Thousand.
This is a book by Luigi Pirandello. He won the nobel prize for literature. It is a book about how to go insane. Excellent, though obviously fiction. He left some things out, and put in some things that are made up. Still, it gives clues that are fairly accurate. One: start with your nose.
Borges liked him. Castaneda borrowed from him.