The Chronicles of Amber
Another milestone was the publication, in 1965, of Frank Herbert's "Dune", a complex work of fiction featuring political intrigue in a future galaxy, mystical religious beliefs, and the ecosystem of the desert planet Arrakis. Another was the emergence of the work of Roger Zelazny, whose novels such as Lord of Light and his famous The Chronicles of Amber showed that the lines between science-fiction, fantasy, religion, and social commentary could be very fine.