Transcription: Leonardo quickly advanced beyond mere representation. In studies for paintings he introduced a major renovation, a blizzard of pen strokes deepening the emotional power and dynamic expression of a composition. And in an early striking portrait, Ginevra da Benci, he improvised with an oil painting technique. To achieve seamless gradations, he pressed his fingers into the wet paint. For Leonardo, painting was an activity of the intellect, superior to both poetry and music. The painter ought to reflect upon that which he sees, he insisted. Doing this, he will seem to be a second nature. The aim o ...