Cultural Judo: Alberti and the Ancients
Anthony Grafton, 21 November 2024
Late in the 1460s, Leon Battista Alberti wrote a book on ciphers. It was a dialogue between him and a longtime friend, Leonardo Dati, who had recently been made head of the papal secretariat. Like many of Alberti’s writings, On Composing Ciphers was highly original: the first European text to propose a polyalphabetic cipher, which used coding wheels, and to explain the principles of...