Slice It Up: Gutenberg’s Great Invention
Adam Smyth, 20 November 2025
On 12 March 1455, Aeneas Silvius Piccolomini, soon to be Pope Pius II but then bishop of Siena, wrote to his friend Juan de Carvajal, a Spanish cardinal in Rome, describing a ‘viro mirabili’ (miraculous man) he had seen in the market in Frankfurt. The man was selling Bibles in numbers too large to have been the work of manuscript production:
I have not seen complete Bibles,...





