Two lectures are devoted to Leonardo da Vinci, who had already achieved a mature style by his early twenties when he painted <em>Ginevra de' Benci</em>. Also featured are his unfinished <em>Adoration of the Magi</em>, the haunting <em>Madonna of the Rocks</em>, <em>Mona Lisa</em>, and the beautiful <em>Lady with an Ermine</em>.