A page from Pacioli's math encyclopedia, Summa de Arithmetica, Geometria, Proportioni et Proportionalita.
via Jane Gleeson-White
October 4, 2012 The birth of accounting rocked the world 500 years ago. And it involves a man who was a magician, a mathematician, and possibly the boyfriend of Leonardo da Vinci.
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December 9, 2011 An exhibition of works of Leonardo da Vinci at the National Gallery in London has something important to teach us about mind and body. Hands figure prominently in an investigation of the human soul.
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