Baptism of Christ, by Verrochio, detail. The angel on the left and the landscape are said to have been the work of Verrochio's pupil Leonardo. According to Vasari the master was so chagrined that a child should know more than he that he abandoned painting.
Chapter I
The man who painted the world-famous Mona Lisa was born near the village of Vinci, in the countryside of Florence, on April 15, 1452. He was baptized Leonardo and was to become one of the most brilliant figures in a fascinating period of European history, the Italian Renaissance. He is mostly known as an artist, but he was much more, and his impact on the course of Western history has been immeasurable. Leonardo's unparalleled diversity of talents justifies calling him a "genius", a true embodiment of the Renaissance ideal of a universal man. Not only did he excel as a painter and sculptor, but he displayed a whole range of artistic and scientific capacities in such diverse fields as mathematics, mechanics, aeronautics, anatomy, geography, botany, astronomy, military engineering and even town planning and architecture.
Leonardo began his career as a painter in his hometown, Florence, which was one of the two cultural centres of Renaissance Italy, the other being Venice. He became an apprentice to the painter and sculptor Andrea del Verrocchio, who is reported to have stopped painting when he saw that his young student Leonardo had surpassed him.1 Leonardo enjoyed inspiring companionship: among his fellow-students were Ghirlandaio and Perugino. And in the ruler of Florence, Lorenzo di Medici, "Il Magnifico", Leonardo found an art-loving patron who generously promoted all the arts, literature and philosophy.2 But after
executing a few major works — the large panel painting The Adoration of the Magi'3is a revealing example of his early mastery and remarkable talent — Leonardo left his hometown in 1482 to work for Ludovico Sforza, "Il Moro", duke of Milan.4 The motives for this decision are not completely clear, but it seems that the intellectual atmosphere of Florence, which at that time was strongly influenced by mystical Hermetism and esoteric Neoplatonism, did not appeal to the more rationally inclined Leonardo.5 He was an independent and critical investigator who despised dogma as well as magic as futile attempts to understand and influence reality. Alchemy to him was nothing more than "the most foolish opinions", and he even expressed his hope that the flourishing astrologers of his day would be castrated.6 He showed the same attitude towards Christian doctrine, if one can trust his sixteenth century biographer Vasari who related that "Leonardo was of so heretical a cast of mind that he conformed to no religion whatever, accounting it perchance much better to be a philosopher than a Christian."7
At any rate, when Leonardo heard that Ludovico wanted a military engineer, an architect, a sculptor, and a painter, he decided to offer himself as all these in one. And so he wrote his famous letter:
Most Illustrious Lord, having now sufficiently seen and considered the proofs of all these who count themselves masters and inventors of instruments of war, and finding that their invention and use of the said instruments does not differ in any respect from those in common practice, I am emboldened without prejudice to anyone else to put myself in communication with your Excellency, in order to acquaint you with my secrets, thereafter offering myself at your pleasure effectually to demonstrate at any convenient time all those matters which are in part briefly recorded below.
I have plans for bridges, very light and strong, suitable for carrying very easily...
When a place is besieged I know how to cut off water from the
1. Mechanism for drawing Crossbows- 2. Design for a Siege Machine with Covered Bridge- 3. Machine to prevent Fortress Walls being Scaled- 4. Mechanism for repulsing Scaling Ladders.
trenches, and how to construct an infinite number of... scaling ladders and other instruments ...
I have plans for making cannon, very convenient and easy of transport, with which to hurl small stones in the manner almost of hail ...
And if it should happen that the engagement is at sea, I have plans for constructing many engines most suitable for attack or defense, and ships which can resist the fire of all the heaviest cannon, and powder and smoke.
Also I have ways of arriving at a certain fixed spot by caverns and secret winding passages, made without any noise even though it may be necessary to pass underneath trenches or a river.
Also I can make covered cars, safe and unassailable, which will enter the serried ranks of the enemy with artillery, and there is no company of men at arms so great as not to be broken by it. And behind these the infantry will be able to follow quite unharmed and without any opposition.
Also, if need shall arise, I can make cannon, mortars, and light ordance, of very beautiful useful shapes, quite different from those in common use.
Where it is not possible to employ cannon, I can supply catapults, mangonels, traps, and other engines of wonderful efficacy not in general use. In short, as the variety of circumstances shall necessitate, I can supply an infinite number of different engines of attack and defense.
In time of peace I believe that I can give you as complete satisfaction as anyone else in architecture, in the construction of buildings both public and private, and in conducting water from one place to another.
Also I can execute sculpture in marble, bronze, or clay, and also painting, in which my work will stand comparison with that of anyone else whoever he may be.
Moreover, I would undertake the work of the bronze which shall endue with immortal glory and eternal honour the auspicious memory of the Prince your father and of the illustrious house of Sforza.
And if any of the aforesaid things should seem impossible or impracticable to anyone, I offer myself as ready to make trial of them in your park or in whatever place shall please your Excellency, to whom I commend myself with all possible humility.8
It is not known what Ludovico replied, but the thirty-year-old Leonardo entered the splendid court of Ludovico Sforza with great acclaim. He was described as "a beautiful person, well proportioned, with a fine beard well arranged in ringlets, reaching down to the middle of his chest",9 and he fascinated his audience with his playing on a lyre his own hands had fashioned in the form of a horse's head, with his gentle voice, and with his subtle arguments in conversation. "His powers of conversation were such as to draw to himself the souls of listeners", remembers Vasari.10 Employed as a "painter and engineer of the Duke", Leonardo directed an extensive workshop with several students, entertained the court with his decorations for the frequent festivities, and did some paintings, among them the beautiful Virgin of the Rocks and the monumental Last Supper.
The story of the execution of this last painting gives telling insights into the personality of the great painter. Shortly after he entered Ludovico's service, the Duke asked him to depict the Last Supper on the far wall of the refectory where the Dominican friars took their meals, at the church of Santa Maria delle Grazie. For three years (1495-98) Leonardo laboured but dallied at the task. The head of the monastery complained to Ludovico of Leonardo's apparent sloth: the painter would sit before the wall for hours without painting a stroke. Leonardo explained to his patron that the artist's most important work lies in conception rather than execution. In this case he had two great difficulties, he said: to conceive features worthy of Jesus Christ, and to picture a man as heartless as Judas. Leonardo spent much of his time searching the streets of Milan for heads and faces that could serve him in representing the Apostles. One of the tragedies of Leonardo's life is that because of certain unconventional mural
Annunciation, c. 1472
techniques the paint soon began to flake and fall. Leonardo shunned the traditional fresco method where the painter had to work fast on wet plaster, and tried a new mixture of colours intended to give the painter more time for contemplation. Today, although we can hardly study the shades of subtleties of the painting, the composition and general outlines alone make it evident that The Last Supper deserves to be called the greatest painting of the Renaissance.
Leonardo's most ambitious project for Ludovico, a sixteen-feet high equestrian statue in honour of Francesco Sforza, the Duke's father, was a failure, an exhausting and unnerving experience for Leonardo. The tons of bronze intended for the statue were instead used to make cannonballs to fight the French who were then menacing Milan. After four years of work, Leonardo had only finished the clay model of the horse, which the French soldiers used as a target when they captured the city. The many anatomical sketches Leonardo had made were of such excellent quality that they set a new standard for anatomical drawings.
During the seventeen years Leonardo stayed in Milan he released the creative power of his investigative mind through the study of nature by all sorts of different means; ranging from geometry, architecture and painting to geology, biology and mechanical engineering. He recorded the proceedings of these studies in notebooks, writing the Italian vernacular in a strange mirror-script." (see example p. 83-85) He is said to have composed about 120 manuscripts, and the fifty that remain are a treasure for historians of science and philosophy. He combined text and illustrations as a method — he called it dimonstratione (demonstration) to present his discoveries and inventions; but the notebooks were never published.
One of the most striking themes in the notebooks, one which Leonardo spent half his life studying, is the problem of human flight. He envied the birds as a species in some ways superior to man. He studied every aspect of their wings and tails, and the mechanics of their soaring, gliding, turning and descending. And he planned the conquest of the air:
You will make an anatomy of the wings of a bird, together with the muscles of the breast, which move these wings. And you will do the same for a man, in order to show the possibility of a man sustaining himself in the air by the beating of wings.12
A bird is an instrument working according to mechanical law. This instrument it is within the power of man to reproduce with all its movements, but not with a corresponding degree of strength.13
In a brief essay, Sul Volo (On Flight), he described a flying machine made by him of strong cloth, leather and silk. He called this machine "the bird" and wrote instructions on how to fly it:
Make trial of the Machine over the water, so that if you fall you do not do yourself any harm... 14
The great bird will take its first flight... filling the whole world with amazement and all records with its fame; and it will bring eternal glory to the nest where it was born.15
During Leonardo's lifetime only one work of his was published, in collaboration with the mathematician Luca Pacioli, entitled De Divina Proportione (on Divine Proportion), published in Venice in 1509. His Treatise on Painting was edited after his death by his lifelong friend Francesco Melzi.16 This work must be seen in the context of the ongoing Renaissance discussion on the scientific foundation of art, as exemplified by the works of L.B. Alberti and Piero della Francesca.17 In the Treatise, Leonardo demonstrated the mathematical and biological basis of the art of painting, described the geometry of space and functioning of the eye, and expounded the concept of saper vedere (to know how to see), as the creative method not only for painting but for every conscious artistic expression. For Leonardo, "the eye is the window of the soul"18 and the most noble of the senses,
Virgin and Child with St Ann, c. 1502/1513?
constantly reflecting and determining what we call "reality". The painter once endowed with the powers of perception and the perfect ability to pictorialize what he perceives becomes thus a real scientist, achieving knowledge by observation and reproducing that knowledge authentically.
Unexplained gaps in the chronology of Leonardo's life between 1482 and 1487 have given rise to speculations about a journey to the Near East or even Asia, but apart from some passages in the Codice Atlantico notebook, there is no convincing evidence. In 1499 the French King Louis VII captured Milan and soon afterwards Leonardo and his friends returned to Florence where he was welcomed with honour and given ample opportunity to work. He made the cartoon for an altarpiece, The Virgin, Child, and St. Ann, and when it was publicly displayed it attracted large crowds of people who came as if attending a solemn festival. But his life was "so irregular and unsettled that he may be said to [have lived] from day to day."19 Only his constant search for new frontiers can explain his decision to enter the service of the ruthless commander-in-chief of the Papal Army, Cesare Borgia, son of the notorious Pope Alexander VI." Borgia was entrusted with the mission of gaining control of central Italy, and Leonardo stayed with him as his "military engineer" for almost one year. Besides military advice, he supplied maps of cities and topographical sketches which laid the foundation of modern cartography.
Upon his return to Florence the governing council of the city organised a competition in the Palazzo Vecchio for the best mural painting on an historical theme. The population of Florence watched in expectation as the two greatest artists of the day, Leonardo and Michaelangelo, became competitors. But neither Leonardo's Battle of Anghiari nor Michaelangelo's Battle of Cesna were completed. It is not clear whether Leonardo's return to Milan in 1506 was precipitated by personal quarrels with Michaelangelo or by disappointment with another failure to employ a new technique for the monumental (7x17 meters) mural (he seems not to have learned the lesson of The Last Supper).
However he asked for and was granted permission to leave Florence and work in Milan for the French Chancellor, Charles d'Amboise. Here Leonardo stayed for six years, decorating palaces, preparing festivals, designing canals and sewage systems for Milan, studying anatomy, and doing some painting. But his success as an engineer and scientist was marred by another disappointment in his work as a sculptor, when again an equestrian monument — this time for a victorious French Marshal — did not go beyond the stage of preliminary sketches. At any rate, it seems that Leonardo was more and more occupied with the scientific investigation of matter, and his notebooks of that time, including mechanical, optical, mathematical, biological and geological studies, reveal that he was increasingly convinced that nature worked on the basis of mathematically explicable rules. "Let no man who is not a mathematician read the elements of my work,"21 he insisted, recalling the ancient Greek mathematician Euclid and anticipating the quantification of natural philosophy by Galileo.
When the French lost Milan in 1513, Leonardo, now sixty, again had to move. He left for Rome where the art-loving Pope Leo X (formerly Giovani di Medici) commissioned great works from Raphael, Michaelangelo, Bramante and Peruzzi.22 He was entertained at the Belvedere, a summer palace atop the Vatican Hill, but could not find the place he deserved as a master artist and received no large commission from the Pope. In fact, Leo X complained about him: "This man will never get anything done, for he is thinking about the end before he begins."23 Thus, after three years of disappointment and loneliness in Rome, Leonardo readily accepted an invitation from King Francis I to come to France. He spent the last three years of his life, accompanied by the faithful Francesco Melzi, in the castle of Cloux near the Loire river, greatly admired by the French King who later told Benevenuto Cellini that he "believed no other man had been born who knew as much about sculpture, painting and architecture, but still more... was a very great philosopher."24 Francis I gave Leonardo complete freedom to make finishing touches on
some of his paintings and to rearrange and edit his notebooks. Leonardo died on May 2, 1519, and was buried in the palace Church of Saint Florine, which was destroyed during the French Revolution and completely torn down in the early nineteenth century. Except for his creations, no trace of Leonardo remains. But he once wrote: "A day well spent makes it sweet to sleep, so a life well used makes it sweet to die."25
Four centuries later, we may be able to see Leonardo's impact and significance on the course of history much more clearly than his contemporaries, among whom only a handful realised his unique talent and his advanced state of consciousness. His synthesis of science and art, of investigation and expression, was a major break-through on the way towards modern empirical and rational science. His paintings, above all Mona Lisa and The Last Supper, are such extraordinary renderings of physical and spiritual realities as to be considered immortal peaks of art. In sculpture he conceived the greatest projects of his age, and the anatomical sketches for the two equestrian monuments still rank among the best works ever done in anatomy. As a scientist, besides inventing many curious devices, he initiated a new way of exploring matter: his methods of experiment and quantification combined with visual demonstrations and textual explanations anticipate the modern scientific methods, and his concept of "force" as the prime agent in organic and inorganic matter has become a fundamental notion of modern physics. His science of seeing, saper vedere, as a precise method of revealing and understanding the secrets of reality ranks beside Socrates' Know that you do not know as a philosophical and practical guideline for a conscious life.
The philosopher and historian Will Durant has this to say about Leonardo:
How shall we rank him? — though which of us commands the variety of knowledge and skills required to judge so multiple a Man? The fascination of his polymorphous mind lures us into exaggerating his actual achievement; for he was more fertile in
Annunciation, detail
conception than in execution... And yet Leonardo's studies of the horse were probably the best work done in anatomy of that age; Ludovico and Cesare Borgia chose him, from all Italy, as their engineer; nothing in the paintings of Raphael or Titian or Michaelangelo equals The Last Supper; no painter has matched Leonardo in subtlety of nuance, or in the delicate portrayal of feeling and thought and pensive tenderness; no statue of the time was so highly rated as Leonardo's plaster Sforza; no drawing has ever surpassed The Virgin, Child and Ste Anne; and nothing in Renaissance philosophy soared above Leonardo's conception of natural law.
He was not "the man of the Renaissance", for he was too gentle, introverted, and refined to typify an age so violent and powerful in action and speech. He was not quite "the universal man", since the qualities of statesman or administrator found no place in his variety. But, with all his limitations and incompletions, he was the fullest man of the Renaissance, perhaps of all time. Contemplating his achievement we marvel at the distance that man has come from his origins, and renew our faith in the possibilities of mankind.26
Leonardo's constant search for precision in cognition and for perfection in expression often brought him beyond the scope of the original task at hand, and he sometimes got lost in experimenting with details and distracted by exploring new possibilities. Sometimes when his thirst for knowledge was satisfied he lost interest in his subject and would drop it in favour of new frontiers. And only too often the ignorance and arrogance of his patrons frustrated him. His spiritual aspirations to see and to express clashed with the imperfections of the physical world. There was in him some conflict between the spiritual and the material. But in the instances that Leonardo was able to overcome this seeming contradiction and synthesize his vast talents, the results were so stupendous that they remain timeless inspirations in the search for an integral aim of life.
Notes
(New York: Simon and Schuster, 1953), p. 222.
mould, unscrupulously pursuing power and wealth. For Niccolo Macchiavelli, Cesare Borgia was a model of the successful secular ruler. See Niccolo Macchiavelli, Il Principe, (The Prince).
Altogether, his genius was so wonderfully inspired by the grace of God, his powers of expression were so powerfully fed by a willing memory and intellect, and his writing conveyed his ideas so precisely, that his arguments and reasonings confounded the most formidable critics.
— Giorgio Vasari, 1568