"To make a perfume, take some rose water and wash your hands in it, then take a lavender flower and rub it with your palms, and you will achieve the desired effect"
"I say that the power of vision extends through the visual rays to the surface of non-transparent bodies, while the power possessed by these bodies extends to the power of vision."
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Source: Leonardo da Vinci (2008). “Notebooks”, p.112, OUP Oxford
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