Francis of Assisi did not shape a systematic tractate about prayer and contemplation. He was first of all a Man of Prayer and secondly a Master of Prayer. This article tries to work out some mainlines of St. Francis’ practice of prayer based on a small selection of his writings. Despite an incomparable situation of spirituality, society, and lifestyle between the 13th century and today, it is possible to figure out some persistent elements of what it means “to pray”: acclamation to and dialogue with the ineffable God; the logic of donation and restitution; the relevance of identity and universal solidarity in prayer; the relation between prayer and action or the meaning of “unceasing prayer”...