Leonardo da Vinci (1452–1519), not only a virtuoso painter, author of the greatest masterpieces in history, he was also a visionary inventor, architect and theorist. He undoubtedly embodies the universal and humanist genius of the Renaissance. This character is all the more fascinating as he is not a scholar: reading neither Latin nor Greek, he has little knowledge of ancient culture. But Leonardo da Vinci is passionate about observing nature! This great artist is distinguished by his bubbling mind overflowing with curiosity. He cultivates a scientific approach that places him at the forefront of his time, and still fascinates, five centuries later.