In 1654, twelve years after the death of the brilliant Italian astronomer and scientist Galileo Galilei, Prince Leopold de' Medici, brother of the Tuscan grand duke and a key patron of Tuscan science, requested that Galileo's student, Vincenzo Viviani, write a biography of his late mentor. Viviani, who had assisted Galileo in his later years, responded to Prince Leopold with an account of Galileo's achievements, which he claimed to document "with historical integrity and complete honesty." This letter remained unpublished for over sixty years before finally being printed in 1717 as the book Racconto istorico della vita di Galileo Galilei (Historical Account of the Life of Galileo Galilei).
A mid-19th century sketch of the Leaning Tower of Pisa by an unknown artist.
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