The Mona Lisa, to me, is the greatest emotional painting ever done. The way the smile flickers makes it a work of both art and science, because Leonardo understood optics, and the muscles of the lips, and how light strikes the eye - all of it goes into making the Mona Lisa's smile so mysterious and elusive.
Walter IsaacsonThe reality distortion field was a confounding mรฉlange of a charismatic rhetorical style, indomitable will, and eagerness to bend any fact to fit the purpose at hand.
Walter Isaacson