Sacred Texts  Age of Reason  Index 
III. Six Books on Light and Shade Index
  Previous  Next 
Buy this Book at Amazon.com

The Da Vinci Notebooks at sacred-texts.com

129.

MEMORANDUM OF THINGS I REQUIRE TO HAVE GRANTED [AS AXIOMS] IN MY EXPLANATION OF PERSPECTIVE.

I ask to have this much granted me--to assert that every ray passing through air of equal density throughout, travels in a straight line from its cause to the object or place it falls upon.


Next: 130.