Agatha Christie is popularly said to be the bestselling literary author of all time. Her 85 novels have sold an estimated three billion copies worldwide.

The single bestselling book of all time is the Bible.

JRR Tolkien and CS Lewis, the authors of The Lord of the Rings and The Lion, The Witch, and The Wardrobe, were best friends.

The earliest known use of the word “hobbit” in print dates from 1897-40 years before JRR Tolkien’s book was published.

Sixty five years before Dr. Seuss wrote How The Grinch Stole Christmas, Rudyard Kipling used the word “grinch” as a verb meaning to crush or grate in 1892.

The English novelist Enid Blyton, known for the Famous Five books, published 762 books in her lifetime.

Roald Dahl was inspired to write Charlie and the Chocolate Factory because British chocolate company Cadbury used to send boxes of chocolates to his school as a child to test.

In none of Arthur Conan Doyle’s novels does Sherlock Holmes ever say “Elementary, my dear Watson.”

Dr. Seuss wrote Green Eggs And Ham after his publisher bet him that he couldn’t write a story using no more than 50 different words.