Sublime

Francesco di Giorgio from Siena.8 Thirteen years older than Leonardo, he was another exemplar of an artisan who combined art, engineering, and architecture. He had begun as a painter, moved as a young man to Urbino to work as an architect, returned to Siena to run the underground aqueduct system, and was a sculptor in his spare time. He was also

In order to make money, Leonardo at times helped his apprentices produce pieces as if on an assembly line, as had been the practice in Verrocchio’s studio.