'Leonardo shall try his hand upon it. It is time he became useful to me,' said Ser Piero to himself. So on his return to Florence he took the shield to his son.

It was a rough, badly-shaped shield, so Leonardo held it to the fire and began to straighten it. For though his hands looked delicate and beautifully formed, they were as strong as steel, and he could bend bars of iron without an effort. Then he sent the shield to a turner to be smoothed and rounded, and when it was ready he sat down to think what he should paint upon it, for he loved to draw strange monsters.

'I will make it as terrifying as the head of Medusa,' he said at last, highly delighted with the plan that had come into his head.

Then he went out and collected together all the strangest animals he could find--lizards, hedgehogs, newts, snakes, dragon-flies, locusts, bats, and glow-worms. These he took into his own room, which no one was allowed to enter, and began to paint from them a curious monster, partly a lizard and partly a bat, with something of each of the other animals added to it.

When it was ready Leonardo hung the shield in a good light against a dark curtain, so that the painted monster stood out in brilliant contrast, and looked as if its twisted curling limbs were full of life.

A knock sounded at the door, and Ser Piero's voice was heard outside asking if the shield was finished.

'Come in,' cried Leonardo, and Ser Piero entered.

He cast one look at the monster hanging there and then uttered a cry and turned to flee, but Leonardo caught hold of his cloak and laughingly told him to look closer.

'If I have really succeeded in frightening thee,' he said, 'I have indeed done all I could desire.'

His father could scarcely believe that it was nothing but a painting, and he was so proud of the work that he would not part with it, but gave the peasant of Vinci another shield instead.

Leonardo then began a drawing for a curtain which was to be woven in silk and gold and given as a present from the Florentines to the King of Portugal, and he also began a large picture of the Adoration of the Shepherds which was never finished.

The young painter grew restless after a while, and felt the life of the studio narrow and cramped. He longed to leave Florence and find work in some new place.

He was not a favourite at the court of Lorenzo the Magnificent as Filippino Lippi and Botticelli were. Lorenzo liked those who would flatter him and do as they were bid, while Leonardo took his own way in everything and never said what he did not mean.

But it happened that just then Lorenzo wished to send a present to Ludovico Sforza, the Duke of Milan, and the gift he chose was a marvellous musical instrument which Leonardo had just finished.

It was a silver lute, made in the form of a horse's head, the most curious and beautiful thing ever seen. Lorenzo was charmed with it.

'Thou shalt take it thyself, as my messenger,' he said to Leonardo. 'I doubt if another can be found who can play upon it as thou dost.'

So Leonardo set out for Milan, and was glad to shake himself free from the narrow life of the Florentine studio.

Before starting, however, he had written a letter to the Duke setting down in simple order all the things he could do, and telling of what use he could be in times of war and in days of peace.

There seemed nothing that he could not do. He could make bridges, blow up castles, dig ca.n.a.ls, invent a new kind of cannon, build warships, and make underground pa.s.sages. In days of peace he could design and build houses, make beautiful statues and paint pictures 'as well as any man, be he who he may.'

The letter was written in curious writing from right to left like Hebrew or Arabic. This was how Leonardo always wrote, using his left hand, so that it could only be read by holding the writing up to a mirror.

The Duke was half amazed and half amused when the letter reached him.

'Either these are the words of a fool, or of a man of genius,' said the Duke. And when he had once seen and spoken to Leonardo he saw at once which of the two he deserved to be called.

Every one at the court was charmed with the artist's beautiful face and graceful manners. His music alone, as he swept the strings of the silver lute and sang to it his own songs, would have brought him fame, but the Duke quickly saw that this was no mere minstrel.

It was soon arranged therefore that Leonardo should take up his abode at the court of Milan and receive a yearly pension from the Duke.

Sometimes the pension was paid, and sometimes it was forgotten, but Leonardo never troubled about money matters. Somehow or other he must have all that he wanted, and everything must be fair and dainty. His clothes were always rich and costly, but never bright-coloured or gaudy. There was no plume or jewelled brooch in his black velvet beretto or cap, and the only touch of colour was his golden hair, and the mantle of dark red cloth which he wore in the fashion of the Florentines, thrown across his shoulder. Above all, he must always have horses in his stables, for he loved them more than human beings.

Many were the plans and projects which the Duke entrusted to Leonardo's care, but of all that he did, two great works stand out as greater than all the rest. One was the painting of the Last Supper on the walls of the refectory of Santa Maria delle Grazie, and the other the making of a model of a great equestrian statue, a bronze horse with the figure of the Duke upon its back.

'Year after year Leonardo worked at that wonderful fresco of the Last Supper. Sometimes for weeks or months he never touched it, but he always returned to it again. Then for days he would work from morning till night, scarcely taking time to eat, and able to think of nothing else, until suddenly he would put down his brushes and stand silently for a long, long time before the picture. It seemed as if he was wasting the precious hours doing nothing, but in truth he worked more diligently with his brain when his hands were idle.

Often too when he worked at the model for the great bronze horse, he would suddenly stop, and walk quickly through the streets until he came to the refectory, and there, catching up his brushes, he would paint in one or perhaps two strokes, and then return to his modelling.

Besides all this Leonardo was busy with other plans for the Duke's amus.e.m.e.nt, and no court fete was counted successful without his help. Nothing seemed too difficult for him to contrive, and what he did was always new and strange and wonderful.

Once when the King of France came as a guest to Milan, Leonardo prepared a curious model of a lion, which by some inside machinery was able to walk forward several steps to meet the King, and then open wide its huge jaws and display inside a bed of sweet-scented lilies, the emblem of France, to do honour to her King. But while working at other things Leonardo never forgot his longing to learn the secret art of flying. Every now and then a new idea would come into his head, and he would lay aside all other work until he had made the new machine which might perhaps act as the wings of a bird. Each fresh disappointment only made him more keen to try again.

'I know we shall some day have wings,' he said to his pupils, who sometimes wondered at the strange work of the master's hands. 'It is only a question of knowing how to make them. I remember once when I was a baby lying in my cradle, I fancied a bird flew to me, opened my lips and rubbed its feathers over them. So it seems to be my fate all my life to talk of wings.'

Very slowly the great fresco of the Last Supper grew under the master's hand until it was nearly finished. The statue, too, was almost completed, and then evil days fell upon Milan. The Duke was obliged to flee before the French soldiers, who forced their way into the town and took possession of it. Before any one could prevent it, the soldiers began to shoot their arrows at the great statue, which they used as a target, and in a few hours the work of sixteen years was utterly destroyed. It is sadder still to tell the fate of Leonardo's fresco, the greatest picture perhaps that ever was painted. Dampness lurked in the wall and began to dim and blur the colours. The careless monks cut a door through the very centre of the picture, and, later on, when Napoleon's soldiers entered Milan, they used the refectory as a stable, and amused themselves by throwing stones at what remained of it. But though little of it is left now to be seen, there is still enough to make us stand in awe and reverence before the genius of the great master.

Not far from Milan there lived a friend of Leonardo's, whom the master loved to visit. This Girolamo Melzi had a son called Francesco, a little motherless boy, who adored the great painter with all his heart.

Together Leonardo and the child used to wander out to search for curious animals and rare flowers, and as they watched the spiders weave their webs and pulled the flowers to pieces to find out their secrets, the boy listened with wide wondering eyes to all the tales which the painter told him. And at night Leonardo wrapped the little one close inside his warm cloak and carried him out to see the stars--those same stars which old Toscanelli had taught him to love long ago in Florence. Then when the day of parting came the child clung round the master's neck and would not let him go.

'Take me with thee,' he cried, 'do not leave me behind all alone.'

'I cannot take thee now, little one,' said Leonardo gently. 'Thou art still too small, but later on thou shalt come to me and be my pupil. This I promise thee.'

It was but a weary wandering life that awaited Leonardo after he was forced to leave his home in Milan. It seemed as if it was his fate to begin many things but to finish nothing. For a while he lived in Rome, but he did little real work there.

For several years he lived in Florence and began to paint a huge battle-picture. There too he painted the famous portrait of Mona Lisa, which is now in Paris. Of all portraits that have ever been painted this is counted the most wonderful and perfect piece of work, although Leonardo himself called it unfinished.

By this time the master had fallen on evil days. All his pupils were gone, and his friends seemed to have forgotten him. He was sitting before the fire one stormy night, lonely and sad, when the door opened and a tall handsome lad came in.

'Master!' he cried, and kneeling down he kissed the old man's hands. 'Dost thou not know me? I am thy little Francesco, come to claim thy promise that I should one day be thy servant and pupil.

Leonardo laid his hand upon the boy's fair head and looked into his face.

'I am growing old,' he said, 'and I can no longer do for thee what I might once have done. I am but a poor wanderer now. Dost thou indeed wish to cast in thy lot with mine?'

'I care only to be near thee,' said the boy. 'I will go with thee to the ends of the earth.'

So when, soon after, Leonardo received an invitation from the new King of France, he took the boy with him, and together they made their home in the little chateau of Claux near the town of Amboise.

The master's hair was silvered now, and his long beard was as white as snow. His keen blue eyes looked weary and tired of life, and care had drawn many deep lines on his beautiful face. Sad thoughts were always his company. The one word 'failure' seemed to be written across his life. What had he done? He had begun many things and had finished but few. His great fresco was even now fading away and becoming dim and blurred. His model for the marvellous horse was destroyed. A few pictures remained, but these had never quite reached his ideal. The crowd who had once hailed him as the greatest of all artists, could now only talk of Michelangelo and the young Raphael. Michelangelo himself had once scornfully told him he was a failure and could finish nothing.

He was glad to leave Italy and all its memories behind, and he hoped to begin work again in his quiet little French home. But Death was drawing near, and before many years had pa.s.sed he grew too weak to hold a brush or pencil.

It was in the springtime of the year that the end came. Francesco had opened the window and gently lifted the master in his strong young arms, that he might look once more on the outside world which he loved so dearly. The trees were putting on their dainty dress of tender green, white clouds swept across the blue sky, and April sunshine flooded the room.

As he looked out, the master's tired eyes woke into life.

'Look!' he cried, 'the swallows have come back! Oh that they would lend me their wings that I might fly away and be at rest!'

The swallows darted and circled about in the clear spring air, busy with their building plans, but Francesco thought he heard the rustle of other wings, as the master's soul, freed from the tired body, was at last borne upwards higher than any earthly wings could soar.