who was leonardo da vinci teacher?
lorenzo de' medici patron of leonardo da vinci
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 Today , Leonardo is widely considered one of the most diversely talented individuals ever to have lived . 

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 Leonardo had many friends who are now renowned either in their fields or for their historical significance . They included the mathematician Luca Pacioli , with whom he collaborated on the book De divina proportione in the 1490s . Leonardo appears to have had no close relationships with women except for his friendship with Cecilia Gallerani and the two Este sisters , Beatrice and Isabella . While on a journey that took him through Mantua , he drew a portrait of Isabella that appears to have been used to create a painted portrait , now lost . 

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 Leonardo da Vinci ( 1452 – 1519 ) was trained in anatomy by Andrea del Verrocchio . He made use of his anatomical knowledge in his artwork , making many sketches of skeletal structures , muscles and organs of humans and other vertebrates that he dissected . 

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 Leonardo 's The Battle of Anghiara was commissioned in 1505 , but was lost . All that remains is a copy by Rubens , but Maurizio Seracini is convinced it can still be found and has spent a lifetime searching for it . He was allowed to drill some pilot holes in a mural in the Salone dei Cinquecento , Palazzo Vecchio , Florence , and his team did find evidence of an oil painting underneath . 

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 Some 20 years after Leonardo 's death , Francis was reported by the goldsmith and sculptor Benvenuto Cellini as saying : " There had never been another man born in the world who knew as much as Leonardo , not so much about painting , sculpture and architecture , as that he was a very great philosopher . " 
