Fahrenheit 451 is the temperature at which book paper burns.
Moved by film you go to the library the next day and check out the book itself. Bradbury's main character, Guy Montag, a fireman who until this moment had been an official book burner himself, speak the line that stay with you, even today. After he watches an old woman burn to death with her forbidden volumes. "There must be something in books, things we can't imagine, to make a woman stay in a burning house; there must be something"
Fahrenheit 451, Ray Bradbury's classic, in the now not-so-distant future, people must memorize the the content of book because to own a book is illegal.