Hello, here are some of my recommendations of books, maybe one day, I will make some reviews of them, maybe.
1-
The Gospel According to Jesus Christ by José Saramago, it is a masterpiece for atheists, the recount of Jesus Christ life from a secular perspective. Love the writter, the book was banned and has a lot of controversy.
2-
Cain by José Saramago, also a great book, recount of the book of genesis from the old testament by Cain, the first killer, that hates god and wants to kill him.