Classic books have inspired countless readers and continue to captivate and entertain. They offer a glimpse into different eras and cultures, and provide insights into the human experience that are still relevant today.

Here are 20 classic books that are worth rereading as an adult:

1. “To Kill a Mockingbird” by Harper Lee: This classic novel explores themes of racial injustice and moral courage through the eyes of a young girl growing up in the South during the 1930s.
2. “The Great Gatsby” by F. Scott Fitzgerald: This novel is a timeless exploration of the American Dream, love, and decadence in the Roaring Twenties.
3. “Pride and Prejudice” by Jane Austen: This novel is a classic tale of love and social class set in Georgian-era England, and is known for its witty dialogue and memorable characters.
4. “1984” by George Orwell: This dystopian novel explores themes of government control, censorship, and the power of language, and remains a chilling warning against the dangers of totalitarianism.
5. “The Catcher in the Rye” by J.D. Salinger: This novel is a coming-of-age story that explores themes of alienation, loss, and the search for identity.
6. “Brave New World” by Aldous Huxley: This dystopian novel explores the dangers of a society obsessed with pleasure and efficiency, and raises questions about the limits of science and technology.
7. “Wuthering Heights” by Emily Bronte: This novel is a gothic romance that explores themes of love, revenge, and the destructive power of passion.
8. “One Hundred Years of Solitude” by Gabriel Garcia Marquez: This novel is a magical realist masterpiece that tells the story of the Buendia family over the course of several generations, exploring themes of love, death, and the cyclical nature of time.
9. “The Adventures of Huckleberry Finn” by Mark Twain: This novel is a classic coming-of-age story that explores themes of race, identity, and the meaning of freedom.
10. “The Picture of Dorian Gray” by Oscar Wilde: This novel is a gothic tale of morality and corruption that explores the dangers of vanity, beauty, and desire.
11. “Jane Eyre” by Charlotte Bronte: This novel is a gothic romance that tells the story of Jane Eyre, a young governess who falls in love with her employer, Mr. Rochester. It explores themes of love, independence, and the struggle for identity.
12. “The Count of Monte Cristo” by Alexandre Dumas: This novel is a classic tale of revenge and justice, following the story of a young man named Edmond Dantès, who is wrongfully imprisoned and seeks revenge against those who wronged him.
13. “Anna Karenina” by Leo Tolstoy: This novel is a sweeping epic that tells the story of Anna Karenina, a married woman who falls in love with a dashing young officer. It explores themes of love, marriage, and the consequences of desire.
14. “The Grapes of Wrath” by John Steinbeck: This novel is a classic piece of American literature that tells the story of the Joad family, who are forced to leave their home in Oklahoma during the Great Depression and migrate to California in search of work.
15. “Moby-Dick” by Herman Melville: This novel is a classic tale of obsession and adventure, following the story of Captain Ahab and his pursuit of the elusive white whale, Moby-Dick.
16. “The Scarlet Letter” by Nathaniel Hawthorne: This novel is a classic tale of sin and redemption set in colonial Massachusetts. It explores themes of morality, guilt, and the consequences of adultery.
17. “The Canterbury Tales” by Geoffrey Chaucer: This collection of stories, written in Middle English, offers a fascinating glimpse into medieval life and culture. It features a diverse cast of characters who tell stories on their pilgrimage to Canterbury.
18. “Frankenstein” by Mary Shelley: This novel is a gothic masterpiece that explores the dangers of ambition and the consequences of playing God. It tells the story of a young scientist who creates a monster and the havoc that follows.
19. “The Adventures of Sherlock Holmes” by Sir Arthur Conan Doyle: This collection of short stories features the iconic detective Sherlock Holmes and his loyal companion, Dr. Watson. It offers a fascinating glimpse into Victorian-era London and the world of crime-solving.
20. “The Odyssey” by Homer: This epic poem, written in ancient Greek, tells the story of Odysseus and his long journey home after the Trojan War. It explores themes of heroism, temptation, and the struggle for survival.

These books have stood the test of time and offer rich and complex themes that can be appreciated and explored anew as an adult.