Quotation from: The Notebooks of Leonardo Da Vinci
Written by: Leonardo da Vinci
PERSPECTIVE.
And this second object will never be so much higher than the first
as that the eye, being below them, will not see the second as lower
than the first.
PERSPECTIVE.
If the eye sees a second square through the centre of a smaller one,
that is nearer, the second, larger square will appear to be
surrounded by the smaller one.