The Scarlet Plague by Jack London

In "The Scarlet Plague", the world has been devastated by a deadly pandemic that has wiped out most of humanity, leaving only a few survivors. The story is set in 2073, sixty years after the plague, and is narrated by an old man who is one of the last people alive who remembers the pre-plague world. He attempts to impart his knowledge and memories to his grandsons, who have only known the primitive, post-apocalyptic world. The novel explores themes of civilization, knowledge, and the fragility of society. The 11167th greatest book of all time