Vision without execution is hallucination. .. Skill without imagination is barren. Leonardo [da Vinci] knew how to marry observation and imagination, which made him history’s consummate innovato

Vision without execution is hallucination. But I also came to believe that his ability to blur the line between reality and fantasy, just like his sfumato techniques for blurring the lines of a painting, was a key to his creativity. Skill without imagination is barren. Leonardo knew how to marry observation and imagination, which made him history’s

In collecting such a medley of ideas, Leonardo was following a practice that had become popular in Renaissance Italy of keeping a commonplace and sketch book, known as a zibaldone. But in their content, Leonardo’s were like nothing the world had ever, or has ever, seen. His notebooks have been rightly called “the most astonishing testament to the p