Quotation from: The Notebooks of Leonardo Da Vinci
Written by: Leonardo da Vinci
On the natives of hot countries.
1112.
Men born in hot countries love the night because it refreshes them
and have a horror of light because it burns them; and therefore they
are of the colour of night, that is black. And in cold countries it
is just the contrary.
[Footnote: The sketch here inserted is in MS. H3 55b.]