He was also limited by his education. Much of Leonardo’s work was based on his own observations and love of nature, he had no real formal training. It’s interesting to think, that had not been illegitimate, he would likely have followed the family business and been a notary rather than one of the most famous talents of the world.

I’m reading that now. Have you read The Human Cosmos by Jo Marchant? It actually begins with the story of the Lascaux caves.