Quote

Leonardo da Vinci: Natural experience


 Nature is full of infinite causes that have never occurred in experience. ”

— Leonardo da Vinci

English: Self-portrait of Leonardo da Vinci. R...

English: Self-portrait of Leonardo da Vinci. Red chalk. 33 × 21 cm. Turin, Royal Library (inv.no. 15571). NOTE This image is in red chalk. Do not revert to the black and white image. Deutsch: Kopf eines bärtigen Mannes, sog. Selbstbildnis. (Photo credit: Wikipedia)

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