Quotation from: The Notebooks of Leonardo Da Vinci

Written by: Leonardo da Vinci

446.

OF TREES IN THE EAST.

When the sun is in the East the trees seen towards the East will
have the light which surrounds them all round their shadows,
excepting on the side towards the earth; unless the tree has been
pruned [below] in the past year. And the trees to the South and
North will be half in shade and half in light, and more or less in
shade or in light in proportion as they are more or less to the East
or to the West.