From The Notebooks of Leonardo Da Vinci (Jean Paul Richter, 1888), XIV Anatomy, Zoology and Physiology:
Though human ingenuity may make various inventions… it will never devise any inventions more beautiful, nor more simple, nor more to the purpose than Nature does; because in her inventions nothing is wanting, and nothing is superfluous, and she needs no counterpoise when she makes limbs proper for motion in the bodies of animals.
Thanks to Andrew James Campbell for sharing.