Leonardo da Vinci (1452–1519)
As an artist, inventor, scientist, engineer and writer, Leonardo da Vinci had many talents. He also had interesting habits, like writing backward, spelling strangely and not following through on projects. Today, we understand that these traits can all be characteristics of dyslexia and other learning and attention issues. For example, his ability to create imaginative drawings is a strength shared by some people with ADHD. Whether or not he had learning and attention issues, Leonardo used his strengths to earn a place as one of history’s greatest geniuses.