Francis

In Dallas Willard' "Renovation of the Heart" he tells this story on page 69:

In chapter 8 of Little Flowers of St. Francis of Assisi, Francis gives his friend Leo a teaching about what "perfect joy" is. They are trudging through the snow from Perugia to the home of their group at St. Mary of the Angeles. For their brotherhood to give a great example of holiness and edification all lands would not be perfect joy, Francis says. Nor would a great ministry of healing and raising the dead. Nor would possession of all languages and all science, nor all understanding of prophecy and Scripture, and insight into the secrets of every soul. Nor would even the conversion of all unbelievers to faith in Christ.
By this point brother Leo is amazed, and he begs Francis to teach him "wherein is perfect joy." The reply is that if, when they come to their quarters - dirty, wet, and exhausted from hunger - they are rejected, repeatedly rebuffed, and finally driven away by force, then "if we accept such injustice, such cruelty, and such contempt with patience, without being ruffled and without murmuring," and "if we bear all these injuries with patience and joy, thinking of the sufferings of our Blessed Lord, which we would share out of love for Him, write, O Brother Leo, that here, is perfect joy."

That all sounds strange at first, but I really think Francis was on to something.