Leonardo's willingness to question and then abandon the enticing analogy between the circulation of water on the earth and the circulation of blood in the human body shows his curiosity and ability to be open-minded. Throughout his life, he was brilliant at discerning patterns and abstracting from them a framework that could be applied across disciplines. His geology studies show an even greater talent: not letting these patterns blind him. He came to appreciate not only nature's similarities but also its infinite variety. Yet even as he abandoned the simplistic version of the microcosm-macrocosm analogy, he retained the aesthetic and spiritual concept underlying it: the harmonies of the cosmos are reflected in the beauty of living creatures.
( Walter Isaacson )
[ Leonardo da Vinci ]
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