(1) Leonardo da Vinci pursued a wide range of interests. (2) He had so many ideas that new ones distracted him from other projects. (3) Some have observed that he possessed too many abilities. (4) One lifetime contains too few hours for such a man. (5) Leonardo's journals (preserve) many of his plans and ideas. (6) In them, he recorded plans for many inventions. (7) This is how we learn of his great genius today.