Here's a brief review:
“Stop reading only printed books. Learn to read the green book of nature.” – attributed to St. Augustine book m liber mundi
Possession of the book forces a moral quandary. If you hold the book, you are responsible for the narrative of the world. Many stories featuring Liber Mundi revolve around the temptation to "fix" the world—resurrecting a loved one or stopping a war—only to find that editing one sentence causes the entire paragraph of reality to unravel. It is a cautionary tale about the hubris of playing god. Here's a brief review: “Stop reading only printed books