the Palazzo Vecchio that was to be twice as large as "The Last Supper."

He abandoned the "Battle of Anghiari" project after two years when the mural began to deteriorate before he had a chance to finish it.

Inventions

In 1482, Florentine ruler Lorenzo de' Medici commissioned da Vinci to create a silver lyre and bring it as a peace gesture to Ludovico Sforza. After doing so, da Vinci lobbied Ludovico for a job and sent the future Duke of Milan a letter that barely mentioned his considerable talents as an artist and instead touted his more marketable skills as a military engineer.

Using his inventive mind, da Vinci sketched war machines such as a war chariot with scythe blades mounted on the sides, an armored tank propelled by two men crankingwhich is based on the physiology of a bat. These and other explorations into the mechanics of flight are found in da Vinci's Codex on the Flight of Birds, a study of avian aeronautics, which he began in 1505.

Like many leaders of Renaissance humanism, da Vinci did not see a divide between science and art. He viewed the two as intertwined disciplines rather than separate ones. He believed studying science made him a better artist.



In 1502 and 1503, da Vinci also briefly worked in Florence as a military engineer for Cesare Borgia, the illegitimate son of Pope Alexander VI and commander of the papal army. He traveled outside of Florence to survey military construction projects and sketch city plans and topographical maps.

He designed plans, possibly with noted diplomat