Considered to be one of the defining inventions of the Renaissance, Gutenberg Bible marked an evolutionary change in the accessibility of books and learning. The printing press featured the first movable metal type and oil-based ink; previously, bookmakers used hand-cut wooden blocks and water-based ink or copied manuscripts by hand. Published in 1455, Gutenberg Bible has come to represent the subsequent popularization and accessibility of affordable books which revolutionized and helped spur the democratization of the world.