In 1935, Allen Lane, the founder of Penguin Books, revolutionized reading by making high-quality literature affordable for the masses. At the time, books were expensive hardback items reserved for the wealthy. Lane wanted a book that cost 'the same as a pack of cigarettes.' To make them stand out, Penguin used a simple, color-coded design: orange for fiction, blue for biographies, and green for crime. They were sold not just in bookstores, but in railway stations and drugstores. This democratization of literature led to a massive increase in literacy and the spread of ideas, proving that the format of a book is just as important as the words inside it for cultural impact.