A Canticle for Leibowitz lives in my head full time. My dad recommended it to me years ago and I love sci-fi so I picked it up and it just blew me away. The discussions about human nature, theology, and the pitfalls of technological advancement without similar moral advancement, as well as the exploration of differing and opposed belief systems without painting anyone as “right” or “wrong” made a lasting impression on me. I can’t recommend the book enough to anyone who hasn’t read it.

I read Dune in two days when I was a teenager. I was completely taken with it. I’ve never read it since, and I never read the other books, but I remember just devouring it.