Gutenberg Bible, 2 Vols

The printing press has been called the greatest invention of the second millennium. Published in Mainz around 1454, the Gutenberg Bible was the first major Western publication to be printed with movable metal type, ushering in a whole new age of knowledge distribution through mass-produced books.

Before Gutenberg, woodcut printing and early forms of movable type printing had been mastered in Asia, but had yet to reach Europe. Instead, each book had to be copied by hand in a long, labor-intensive process. Not only did Gutenberg's innovation of mechanical movable type significantly speed up production without sacrificing quality, it irreversibly enriched public knowledge, pioneering mass communication and allowing people to access ideas and participate in discussions like never before. When it comes to radical revolutions in media, the Gutenberg Bible is up there with the Internet.