Johannes Gutenberg's invention of the movable type printing press in the 15th century revolutionized communication and information dissemination. This technology allowed for the mass production of books, drastically reducing the time and cost of creating written works. Gutenberg's most famous printed book, the Gutenberg Bible, exemplified this innovation, making literature and knowledge accessible to a broader audience beyond the elite. This shift significantly influenced the spread of ideas during the Renaissance and the Reformation, fostering literacy and contributing to the intellectual movements that shaped modern Western society.