Leon Battista Alberti (Italian: [leˈom batˈtista alˈbɛrti]; 14 February 1404 – 25 April 1472) was an Italian Renaissance humanist author, artist, architect, poet, priest, linguist, philosopher, and cryptographer; he epitomised the nature of those identified now as polymaths. He is considered the founder of Western cryptography, a claim he shares with Johannes Trithemius.He is often considered primarily an architect. However, as James Beck has observed, "to single out one of Leon Battista's 'fields' over others as somehow functionally independent and self-sufficient is of no help at all to any effort to characterize Alberti's extensive explorations in the fine arts". Although Alberti is known mostly as an artist, he was also a mathematician: he made significant contributions to this field. Among the most famous buildings he designed are the churches of San Sebastiano (1460) and Sant'Andrea (1472), both in Mantua.Alberti's life was told in Giorgio Vasari's Lives of the Most Excellent Painters, Sculptors, and Architects. Source: Wikipedia (en)