Quotation from: The Notebooks of Leonardo Da Vinci
Written by: Leonardo da Vinci
[Footnote 8: See No. 58-67.]
No body can be apprehended without light and shade, and light and
shade are caused by light.
835.
WHY MEN ADVANCED IN AGE SEE BETTER AT A DISTANCE.
Sight is better from a distance than near in those men who are
advancing in age, because the same object transmits a smaller
impression of itself to the eye when it is distant than when it is
near.