"I roamed the countryside searching for the answers to things I did not understand. Why shells existed on the tops of mountains along with the imprints of coral and plant and seaweed usually found in the sea. Why the thunder lasts a longer time than that which causes it and why immediately on its creation the lightning becomes visible to the eye while thunder requires time to travel . . . These questions and other strange phenomena engaged my thought throughout my life."
-- Leonardo Da Vinci
Italian Renaissance Painter, Sculptor, Architect and Inventor
