The Passion of Christ was St. Francis' usual meditation

St. Francis of Assisi said that the Passion of Christ was his usual meditation, and that he needed no other reading.

St. Francis of Assisi (d. 1226): “Know, my Brothers, that I have nothing sweeter or more pleasing than the remembrance of the Passion of my Savior, which is the subject of my usual meditation, and if I were to live until the end of the world, I would need no other reading.”