Leonardo da Vinci Leonardo da Vinci

Christie's unveiled Leonardo da Vinci's Salvator Mundi at Christie's New York on Tuesday in New York City. Ilya S. Savenok/Getty Images for Christie's Auction House hide caption

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Ilya S. Savenok/Getty Images for Christie's Auction House

A page from Pacioli's math encyclopedia, Summa de Arithmetica, Geometria, Proportioni et Proportionalita. via Jane Gleeson-White hide caption

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via Jane Gleeson-White

The Accountant Who Changed The World

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