Pope Benedict XVI in
Prayer (a review copy):
His words are a precious reminder to us today, used as we are to evaluating everything with the criterion of productivity and efficiency...Without daily prayer lived with fidelity, our acts are empty, they lose their profound soul, and are reduced to being mere activism which in the end leaves us dissatisfied.
At the end of the chapter:
And there is another precious reminder that I would like to underscore: in the relationships with God, in listening to his word, in dialogue with God, even when we may be in the silence of a church or of our room, we are united in the Lord to a great many brothers and sisters in faith, like an ensemble of musical instruments which, in spite of their individuality, raise to God one great symphony of intercession, of thanksgiving and praise.