Johannes Gutenberg figured out how to make large quantities of durable metal type and how to fix that type firmly enough to print hundreds of copies of a page, yet flexibly enough that the type could be reused to print an entirely different page.
His famous bibles were objects beautiful enough to rival the calligraphy of the monks. The crisp black Latin script is perfectly composed into two dense blocks of text, occasionally highlighted with a flourish of red ink.
Actually, you can quibble with Gutenberg's place in history. The movable type press was originally developed in China. Even as Gutenberg was inventing in Germany, Koreans were ditching their entire method of writing to make printing easier, cutting tens of thousands of characters down to only 28.