The towns of Assisi and Perugia were at war with each other; he was taken prisoner with some of his fellow-citizens: whether it was that he had taken up arms in the service of his country, or that he was beyond the limits of the town of his commercial affairs. His captivity, however, did not affect his spirits, he preserved his cheerfulness and good humor. His companions, who were dejected and cast down, were offended at this, and upbraided him with it, saying that he might, at least out of feeling for them, disguise them, disguise his satisfaction. "I am very sorry for you" he replied, "but as to myself, my mind is at ease and I am thankful that it is so. You see me now a prisoner, but at a future period, you will see me honored by the whole world." There was one among the prisoners whose quarrelsome temper and extreme ill humor caused him to be shunned by the others. Francis entreated them to draw a distinction between his person and his defects, and to bear with him: not being able to induce them to do so, he had the charity to keep him company himself, and by his good advice, he rendered him more gentle. All were so delighted with his goodness of heart, that they sought his friendship.

Liberated from captivity, he returned to Assisi, where God visited him with a long and severe illness, which reduced him to a state of great weakness. This was to prepare his soul for the influence of grace. As soon as he could walk, he wished to enjoy the beauty and air of the country; but he failed to be pleased therewith, and was even disgusted with what he had previously liked the most; he felt contempt for what he had before esteemed, and his own conduct appeared to him to be senseless. This change surprised him much, but it did not as yet make any alteration in his heart. The return of health renewed his attachment to the world, his ambition and vanity revived; he entertained fresh hopes of greatness, and paid once more great attention to his dress. Thus it frequently happens that when God sends illness to worldly persons with a view to their conversion, these have no other effect than momentary reflections and promises, which are soon forgotten on the return of strength.

However, Francis became more and more charitable, and gave to all the poor either money or his clothes. Having met a poor and ill-clad officer who was of a noble family, he saw in him the poverty of Jesus Christ, the King of kings, and being moved to pity, he gave him the new suit of clothes he had on.

The following night God showed him in his sleep a great and magnificent palace, full of warlike arms, all marked with the sign of the cross, to give him an idea of the reward his charity was to receive. He asked whom all that belonged to; and he was answered, that the arms were for his soldiers.

Not as yet understanding the meaning of mysterious dreams, he took this as a token of the success he was to have in warlike achievements, without suspecting that the crosses he had seen had a totally different signification. At that time Walter, Count of Brienne, in Champagne, was waging active war against the emperor, in the kingdom of Naples, on the subject of the claims of his wife Alberia, the eldest daughter of Tancred, King of Cicily, who had been some years dead. Francis resolved to offer him his services, in the hope of gaining military honors. He attached himself to an officer of distinction, who belonged to the count's army, and he set out with a good retinue, after having assured his friends that he was sure of acquiring great renown.

He first went to Spoleto, and there Jesus Christ addressed these benevolent words to him during the night: "Francis, which of the two, think you, can be of the greatest service to you: the master or the servant, the rich or the poor?" "It is the master and the rich," he answered without any hesitation. "Why then," continued our Lord, "do you leave God who is the master and rich, to seek man, who is the servant and poor?" "O Lord!" exclaimed Francis, "what is it your pleasure I should do?" Jesus Christ then said to him: "Return to your town; what you have seen signifies nothing but what is spiritual. It is from God, and not from man, that you will receive their accomplishment." The very next morning he retraced his steps towards Assisi, to await the orders of the Lord, without troubling himself as to what the world should say as to this precipitate return.

His friends came as usual to propose a party of pleasure. He received them, as was his custom, with great politeness, and feasted them magnificently to bid them, thus honorably, an eternal adieu. On parting from them, he found himself suddenly struck with the vanity of all terrestrial things, and with the grandeur of all that is heavenly, by a communication from the Spirit of God, full of mildness, but so internal, and so forcible, that his senses were brought into a state of inaction, and he himself remained motionless. He afterwards told his confessor, that, if he had been torn to pieces in this state of rapture, he would not have felt it; that, in that moment, he could only feel at the bottom of his soul. The company, quite alarmed, drew near him; and when he had recovered his usual serenity, they enquired of him, laughing, what had occasioned his extraordinary reserve; if, perhaps, he was not thinking of taking a wife? "It is so," he replied: "I shall take one, but one so noble and so beautiful, that such another will not be found in the whole world." Evangelical poverty, which he afterwards embraced, was the spouse to which the Holy Ghost inspired him to allude.

After this divine favor he disembarrassed himself as much as possible of his commercial affairs, to beg of God to know what He would have him do; and he usually went to pray in a grotto with a confidential friend, who left him there in entire liberty. The frequent recourse to prayer excited in his heart so ardent a desire for the celestial country, that he already looked upon everything that was earthly as nothing. He felt that this happy disposition contained a treasure, but he did not as yet know how to possess himself of the hidden prize. The Spirit of God merely insinuated to him that the spiritual life, under the idea of traffic, must begin by a contempt of the world,—and under the idea of warfare, by a victory over self.—All spirituality not based upon these two Divine lessons, will never have anything solid in it.

Francis had soon occasion to put these lessons in practice. As he was riding across the plains of Assisi, he perceived a leper coming straight to him. At first he felt horror-stricken, but calling to mind that he had formed a resolution to labor to attain perfection, and that, in order to be a soldier of Jesus Christ, it was necessary to begin by obtaining a victory over self, he dismounted, kissed the leper, and gave him an alms. When he again mounted his horse, he no longer saw any one, though he looked all round the plain. Filled with astonishment, and transported with joy, he fell on his knees to thank God, and formed a firm resolution to aim at still greater perfection. This is the effect of generous and courageous efforts, they draw down fresh graces, and reanimate our courage. He acquired also more inclination for retirement, he had no longer any liking but for solitude, for those places which were adapted to the holy sorrow of penance, where he unceasingly addressed himself to God in fervent prayer, accompanied by lamentations, which cannot be described: God at length favorably heard him.

His fervor daily increasing, insomuch that he was wholly absorbed in God, Jesus Christ appeared to him as if attached to the cross. His soul, at this stupendous scene, was wholly penetrated, and, as it were, dissolved, and the image of his crucified Saviour became from that time so strongly and intimately imprinted on his heart, that every time it recurred to his mind, he had a difficulty in restraining his sobs and tears.