While left-handed people know that writing, eating, or drawing with one's left hand can present some difficulties in society, Leonardo da Vinci adjusted to writing and drawing with his left hand by doing the same activity with his right hand as well. In fact, it's said that the artist and writer could write with both hands simultaneously. Some accounts reveal that Leonardo could draw with one hand while writing a mirrored script at the same time. Maybe that's the reason the artist wrote so many volumes of notes.