Then one day he called Filippo to him.

`My son,' he said, `you have learned well, and it is time now to turn your work to some account. Go into the cloister where the walls have been but newly whitewashed, and let us see what kind of pictures thou canst paint.'

With burning cheeks and shining eyes, Filippo began his work. Day after day he stood on the scaffolding, with his brown robe pinned back and his bare arm moving swiftly as he drew figure after figure on the smooth white wall.

He did not pause to think what he would draw, the figures seemed to grow like magic under his touch. There were the monks in their brown and white robes, fat and laughing, or lean and anxious- minded. There were the people who came to say their prayers in church, little children clinging to their mothers' skirts, beggars and rich folks, even the stray dog that sometimes wandered in. Yes, and the pretty girls who laughed and talked in whispers. He drew them all, just as he had often seen them. Then, when the last piece of wall was covered, he stopped his work.

The news soon spread through all the convent that Brother Filippo had finished his picture, and all the monks came hurrying to see. The scaffolding was taken down, and then they all stood round, gazing with round eyes and open mouths. They had never seen anything like it before, and at first there was silence except for one long drawn `ah-h.'

Then one by one they began to laugh and talk, and point with eager, excited fingers. `Look,' cried one, `there is Brother Giovanni; I would know his smile among a hundred.'

`There is that beggar who comes each day to ask for soup,' cried another.

`And there is his dog,' shouted a third.

`Look at the maid who kneels in front,' said Fra Diamante in a hushed voice, `is she not as fair as any saint?'

Then suddenly there was silence, and the brothers looked ashamed of the noise they had been making, as the prior himself looked down on them from the steps above.

`What is all this?' he asked. And his voice sounded grave and displeased as he looked from the wall to the crowd of eager monks. Then he turned to Filippo. `Are these the pictures I ordered thee to paint?' he asked. `Is this the kind of painting to do honour to God and to our Church? Will these mere human figures help men to remember the saints, teach them to look up to heaven, or help them with their prayers? Quick, rub them out, and paint your pictures for heaven and not for earth.'

Filippo hung his head, the crowd of admiring monks swiftly disappeared, and he was left to begin his work all over again.

It was so difficult for Filippo to keep his thoughts fixed on heaven, and not to think of earth. He did so love the merry world, and his fingers, those same ten brown rascals which had got him into trouble when he was a child, always longed to draw just the faces that he saw every day. The pretty face of the little maid kneeling at her prayers was so real and so delightful, and the Madonna and angels seemed so solemn and far off.

Still no one would have pictures which did not tell of saints and angels, so he must paint the best he could. After all, it was easy to put on wings and golden haloes until the earthly things took on a heavenly look.

But the convent life grew daily more and more wearisome now to Filippo. The world, which he had been so willing to give up for a piece of good white bread when he was eight years old, now seemed full of all the things he loved best.

The more he thought of it, the more he longed to see other places outside the convent walls, and other faces besides the monks and the people who came to church.

And so one dark night, when all the brothers were asleep and the bells had just rung the midnight hour, Fra Filippo stole out of his cell, unlocked the convent door, and ran swiftly out into the quiet street.

How good it felt to be free! The very street itself seemed like an old friend, welcoming him with open arms. On and on he ran until he came to the city gates of San Frediano, there to wait until he could slip through unnoticed when the gates were opened at the dawn of day. Then on again until Florence and the convent were left behind and the whole world lay before him.

There was no difficulty about living, for the people gave him food and money, and good-natured countrymen would stop their carts and offer him a lift along the straight white dusty roads. So by and by he reached Ancona and saw for the first time the sea.

Filippo gazed and gazed, forgetting everything else as he drank in the beauty of that great stretch of quivering blue, while in his ears sounded words which he had almost forgotten--words which had fallen on heedless ears at matins or vespers--and which never had held any meaning for him before: `And before the throne was a sea of glass, like unto crystal.'

He stood still for a few minutes and then the heavenly vision faded, and like any other boy he forgot all about beauty and colour, and only longed to be out in a boat enjoying the strange new delight.

Very lucky he thought himself when he reached the shore to find a boat just putting of, and to hear himself invited to jump in by the boys who were going for a sail.

Away they went, further and further from the shore, laughing and talking. The boys were so busy telling wonderful sea-tales to the young stranger that they did not notice how far they had gone. Then suddenly they looked ahead and sat speechless with fear.

A great Moorish galley was bearing down upon them, its rows of oars flashed in the sunlight, and its great painted sails towered above their heads. It was no use trying to escape. Those strong rowers easily overtook them, and in a few minutes Filippo and his companions were hoisted up on board the galley.

It was all so sudden that it seemed like a dream. But the chains were very real that were fastened round their wrists and ankles, and the dark cruel faces of the Moors as they looked on smiling at their misery were certainly no dream.

Then followed long days of misery when the new slaves toiled at the oars under the blazing sun, and nights of cold and weariness. Many a time did Filippo long for the quiet convent, the kindly brothers, and the long peaceful days. Many a time did he long to hear the bells calling him to prayer, which had once only filled him with restless impatience.

But at last the galley reached the coast of Barbary, and the slaves were unchained from the oars and taken ashore. In all his misery Filippo's keen eyes still watched with interest the people around him, and he was never tired of studying the swarthy faces and curious garments of the Moorish pirates.