Italian "painter, sculptor, architect, engineer".
"He was a "renaissance man" best remembered for his paintings, "Mona Lisa," 1503; "The Last Supper," 1498."
All our knowledge has its origins in our perceptions.
"Just as iron rusts from disuse, even so does inaction spoil the intellect."
"Human subtlety . . . will never devise an invention more beautiful, more simple or more direct than does nature because in her inventions nothing is lacking, and nothing is superfluous."
Time stays long enough for those who use it.
Obstacles cannot crush me; every obstacle yields to stern resolve.
