In the Catholic Church, prayer is "the raising of one's mind and heart to God or the requesting of good things from God." It is an act of the moral virtue of religion, which Catholic theologians identify as a part of the cardinal virtue of justice.
Prayer may be expressed vocally or mentally. Vocal prayer may be spoken or sung. Mental prayer can be either meditation or contemplation. The basic forms of prayer are praise, petition (supplication), intercession, and thanksgiving.
Roman Catholic teachings on the subject of prayer are contained in the Catechism, where quoting St. John of Damascus, prayer is defined as "...the raising of one's mind and heart to God or the requesting of good things from God". St. Thérèse of Lisieux describes prayer as "... a surge of the heart; it is a simple look turned toward heaven, it is a cry of recognition and of love, embracing both trial and joy."
By prayer one acknowledges God's power and goodness, and one's own neediness and dependence. It is therefore an act of the virtue of religion implying the deepest reverence for God and habituating a person to look to him for everything. Prayer presupposes faith in God and hope in his goodness. By both, God, to whom one prays, moves the individual to prayer.
Prayer can be divided into vocal and mental types. Vocal prayer is that which is made by using some approved form of words, read or recited; such as the sign of the cross, the Liturgy of the Hours (Divine Office), the Angelus, grace before and after meals, etc. Mental prayer is that which is made without employing either words or formulas of any kind. Catholics are exhorted to beware of underrating the usefulness or necessity of vocal prayer. Common vocal prayers include the Lord's Prayer (Our Father, Pater Noster), the Hail Mary (Ave Maria, Angelic Salutation), the Glory Be (Gloria Patri, Minor Doxology), and the Apostles' Creed (Symbolum Apostolorum).