How to Pray, Episode 7, chapters 16-18
Prayerful Reading – Lectio (Read) Reading supplies material for the understanding of truth, meditation prepares the material, prayer elevates it, and contemplation rejoices in it. Hugh of St. Victor
Meditation – Meditatio (Reflection) You should show yourself diligent, indeed constant, in the reading of scripture, until continual meditation fills your heart and forms you as it were after its likeness. John Cassian
Heartfelt Prayer – Oratio (Reaction) If the heart does not pray then the tongue labours in vain. Saint Bernadine of Siena