Leon Battista Alberti was an Italian humanist author, artist, architect, poet, priest, linguist, philosopher and cryptographer; he epitomised the Renaissance Man. Although he is often characterized exclusively as an architect, 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 for being an artist, he was also a mathematician of many sorts and made great advances to this field during the 15th century. Alberti's life was described in Giorgio Vasari's Lives of the Most Excellent Painters, Sculptors, and Architects.
Elihu Root was an American lawyer and statesman who served as the Secretary of State under President Theodore Roosevelt and as Secretary of War under Roosevelt and President William McKinley. He moved frequently between high-level appointed government positions in Washington, D.C. and private-sector legal practice in New York City. For that reason, he is sometimes considered to be the prototype of the 20th century political "wise man," advising presidents on a range of foreign and domestic issues. He was elected by the state legislature as a U.S. Senator from New York and served one term, 1909–1915. Root was awarded the Nobel Peace Prize in 1912.
William McGuire Bryson OBE HonFRS is an Anglo-American author of books on travel, the English language, science, and other non-fiction topics. Born in the United States, he has been a resident of Britain for most of his adult life, returning to the United States between 1995 and 2003. He served as the chancellor of Durham University from 2005 to 2011.