Love is a virtue and not a feeling. It is fed and fired by God- not by the favorable response of the beloved. Even when it doesn't seem to make a dime's worth of difference to the ones on whom it is lavished, it is still the most prized of all virtues because it is at the heart of the very character of God.
Having grown up Protestant, I was unfamiliar with St. Francis. Then I watched the movie Brother Sun, Sister Moon... I just became fascinated with the character of St. Francis. What I saw in that movie was a man who had fallen in love with God, someone for whom God was everything.
...I think there's only one [thing] that anybody teaches, and this is character. And I think that whether you are teaching history, math, or biology, or music, what you are really doing is, you are helping to shape the character of that person who is your student... Music is such a wonderful teaching tool, because while you are developing musical skills, that student can learn a lot about discipline [and] cooperation.