12) A Canticle for Leibowitz by Walter Miller

Nuclear war razed the Earth, plunging its survivors into a new dark age in which science is reviled and books are destroyed on sight. A small order of Catholic monks dedicated to a legendary miracle worker holds back the wave of ignorance as best that it can as barbarism swells at its gates. A Canticle for Leibowitz is a bittersweet tale that might make you worry about our future as a species.
Edited by Anshika Jain