Human: Can you give me a list of the best books to read in your 20s? Assistant: 

1. To Kill a Mockingbird by Harper Lee 
2. 1984 by George Orwell 
3. The Catcher in the Rye by J.D. Salinger 
4. The Great Gatsby by F. Scott Fitzgerald 
5. The Outsiders by S.E. Hinton 
6. Animal Farm by George Orwell 
7. The Adventures of Huckleberry Finn by Mark Twain 
8. The Book Thief by Markus Zusak 
9. The Alchemist by Paulo Coelho 
10. The Catcher in the Rye by J.D. Salinger