The Da Vinci Notebooks at sacred-texts.com
The eagle when it is old flies so high that it scorches its feathers, and Nature allowing that it should renew its youth, it falls into shallow water 651 . And if its young ones cannot bear to gaze on the sun 652 --; it does not feed them with any bird, that does not wish to die. Animals which much fear
it do not approach its nest, although it does not hurt them. It always leaves part of its prey uneaten.
This is found in Asia Major, and shines so brightly that it absorbs its own shadow, and when it dies it does not lose this light, and its feathers never fall out, but a feather pulled out shines no longer.
321:651 5: The meaning is obscure.
321:652 6: The meaning is obscure.