How a 15th Century Bible and a 17th Century scientist's notebooks give a glorious insight into the written word.

The 15th-Century Gutenberg Bible changed the way books were received and read. It was the first real book to be mass-produced using movable type printing techniques - and so could be made in a fraction of the time it had previously taken scribes to write by hand.

The book is one of several influential scripts being investigated by Melvyn Bragg for BBC Radio 4, as he looks at the written world and how it changed our intellectual history.

http://www.bbc.co.uk/news/magazine-16399544