Leonardo Da Vinci was a famous artist and inventor during the Renaissance time period.He's sometimes described as the Renaissance man. He was never afraid of changes. He always invented new stuffs that no one ever thought of, or metioned to public. Leonardo Da Vinci informed some of the people about his inventions. He didn't fear that other people would call him crazy. He dissected human which was considered as a sick thing in the time period to find out how human body functioned. If it wasn't for him, there wouldn't have been that much change in the Renaissance time period
