O how happy and blessed are those who love the Lord and do as the Lord himself said in the gospel: You shall love the Lord your God with your whole heart and your whole soul; and your neighbor as yourself. Therefore, let us love God and adore him with pure heart and mind. This is his particular desire when he says: True worshipers adore the Father in spirit and truth. For all who adore him must do so in the spirit of truth. Let us also direct to him our praises and prayers saying: Our Father, who art in heaven, since we must always pray and never grow slack.
- A letter from St. Francis of Assisi to all the faithful