Francis of Assisi was a poor little man who astounded and inspired the Church by taking the gospel literally—not in a narrow fundamentalist sense, but by actually following all that Jesus said and did, joyfully, without limit, and without a sense of self-importance.
Serious illness brought the young Francis to see the emptiness of his frolicking life as leader of Assisi’s youth. Prayer—lengthy and difficult—led him to a self-emptying like that of Christ, climaxed by embracing a leper he met on the road. It symbolized his complete obedience to what he had heard in prayer: “Francis! Everything you have loved and desired in the flesh it is your duty to despise and hate, if you wish to know my will. And when you have begun this, all that now seems sweet and lovely to you will become intolerable and bitter, but all that you used to avoid will turn itself to great sweetness and exceeding joy.”
From the cross in the neglected field-chapel of San Damiano, Christ told him, “Francis, go out and build up my house, for it is nearly falling down.” Francis became the totally poor and humble workman.
Francis’ first rule for his followers was a collection of texts from the Gospels. He had no intention of founding an order, but once it began he protected it and accepted all the legal structures needed to support it. His devotion and loyalty to the Church were absolute and highly exemplary at a time when various movements of reform tended to break the Church’s unity.
He was torn between a life devoted entirely to prayer and a life of active preaching of the Good News. He decided in favor of the latter, but always returned to solitude when he could. He wanted to be a missionary in Syria or in Africa, but was prevented by shipwreck and illness in both cases. He did try to convert the sultan of Egypt during the Fifth Crusade.
SOURCE: https://www.franciscanmedia.org/saint-francis-of-assisi/Saint of the Day