THE TARANTULA.
The bite of the tarantula fixes a man’s mind on one idea; that is on the thing he was thinking of when he was bitten.
THE SCREECH-OWL AND THE OWL.
These punish those who are scoffing at them by pecking out their eyes; for nature has so ordered it, that they may thus be fed.
Taken from The Notebooks of Leonardo da Vinci edited by Jean Paul Richter, 1880.