Here's why:
* Subjectivity: Literary taste is highly personal. What one person finds brilliant, another might find dull.
* Different Criteria: "Best" can be defined in many ways: sales, critical acclaim, historical impact, cultural influence, etc.
* Constantly Evolving: Literary canons change over time, and new books are always being written.
Instead of a single "best" book, you'll find many lists and rankings based on different criteria:
* "The 100 Best Novels" by the Modern Library: A well-respected list, but it's just one opinion.
* The Nobel Prize in Literature: Recognizes lifetime achievements in literature, but not all Nobel laureates are considered universally great.
* The New York Times Bestseller List: Based on sales, not necessarily literary quality.
Ultimately, the "best" book for you is the one that resonates most with you personally.