Leonardo da Vinci lived during the Renaissance, when a lot of great art was being made. Leonardo was a scientist inventor, writer, architect, musician, mathematician, and all around genius as well as being a brilliant artist! He was curious about everything, and it showed in all his work. He was always scribbling in notebooks, recording his ideas. Usually he wrote backward in mirror writing! This was probably because he was left handed and it was easier to move his pen from right to left without smudging the ink.