John Steinbeck is one of the most popular authors of the 20th century, known for his deft social commentary and grasp on the lives of the everyday person. \"I was pretty mad but the poor little fellow may have been acting critically,\" Steinbeck wrote of the event. John Steinbeck wrote (but never finished) a book based on King Arthur. John Steinbeck wrote a piece for Esquire defending Arthur Miller during Miller's HUAC investigation. John Steinbeck likely wrote his first novel while working as a caretaker in Lake Tahoe.