Leonardo da Vinci: The Art of Looking Closely

Leonardo da Vinci: The Art of Looking Closely 100 Lives That Shaped the World · Episode 5 ## Chapter 1: A Wall That Would Not Behave In the refectory of Santa Maria delle Grazie in Milan, a great wall painting began to deteriorate within decades of its completion. Leonardo da Vinci had not used conventional wet-plaster fresco. He worked largely on a dry prepared wall with an experimental combination of materials that permitted effects closer to panel painting and more opportunity for revision. Scientific examination continues to refine the exact sequence of layers, so a simple recipe should not be stated as certain. Moisture, the wall preparation, later damage, repainting, and restoration all affected *The Last Supper*. Its early fragility introduces a central question about Leonardo: how did close investigation produce both extraordinary images and projects that remained unstable, unfinished, or unpublished? This decaying wall serves as a monument to Leonardo's entire career, illustrating the profound risks of his experimental mind. His life was defined by an insatiable habit of looking closely at the natural world. To Leonardo, the act of drawing was not merely a way to produce a finished product, but a tool for investigation. He observed the swirl of water around an obstacle, the flight of birds, the growth of plants, and the internal structure of the human body, believing that all these phenomena were governed by the same natural laws. This relentless curiosity meant that his artistic projects were never separate from his scientific inquiries. Yet, this very unity of art and investigation carried a heavy cost. His desire to understand the underlying mechanics of everything he painted often led to material risks, like the unstable paint on the Milanese wall, or to projects that remained forever incomplete. Patrons often despaired of receiving their commissioned works, as Leonardo would abandon a panel to study the geometry of a leaf or the mechanics of a pulley. Why did so much of his work remain unfinished, and why were thousands of pages of observations never published in the form he imagined? Leonardo was not a solitary genius working in a vacuum, but a man embedded in the collaborative workshop culture of Renaissance Italy. He worked with patrons, assistants, and fellow craftspeople, while his surviving notebooks range far beyond the immediate needs of commissions. Changing patrons, war, technical experiments, ambitious standards, and the ordinary difficulty of large projects all contributed to work being delayed, transformed, or abandoned. The notebooks, filled with mirror writing and diagrams, were working papers rather than a single secret book. Some were preparations for treatises that never reached print. This gap between public commissions and unfinished inquiry defines much of his legacy, leaving a small group of accepted paintings and a much larger, dispersed archive of questions, trials, and plans. ## Chapter 2: A Workshop in Florence In the spring of 1452, Leonardo was born near the Tuscan hill town of Vinci. His father, Ser Piero, was a successful notary, and his mother, Caterina, was a local peasant. Because his parents were unmarried, Leonardo was born out of wedlock, a status carrying significant social consequences in fifteenth-century Italy. It barred him from attending university, entering his father's legal profession, or receiving the traditional classical education of the wealthy elite. Instead of learning Latin, Greek, and scholastic philosophy in a formal classroom, Leonardo attended a local *scuola d'abaco*, learning basic reading, writing, and the practical mathematics used in commerce. This limited formal schooling forced him to rely on direct observation and personal experience, establishing a lifelong habit of looking closely at the natural world. He would later proudly style himself an *omo sanza lettere*—an unlettered man—turning this social barrier into an empirical strength. By the late 1460s, Leonardo moved to Florence, a thriving center of trade, finance, and artistic innovation under the Medici. His father secured him an apprenticeship in the workshop of Andrea del Verrocchio, one of the most versatile and respected masters in the city. Verrocchio’s workshop was not a quiet, solitary studio, but a bustling commercial enterprise where art was treated as a collaborative craft. Assistants and apprentices worked side by side, producing everything from large-scale bronze sculptures and painted altarpieces to…

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