Meditative prayer is one stage higher[than vocal prayer]. Here the spirit moves more freely without being bound to specific words. It immerses itself, for example, in the mystery of the birth of Jesus. The spirit's imagination [Phantasie] transports it to the grotto in Bethlehem, seeing the child in the manger, the holy parents, the shepherds, and the kings. The intellect ponders the greatness of divine mercy, the emotions are seized by love and thankfulness, the will decides to make itself more worthy of divine love. This is how meditative prayer involves all the soul's powers and, when practiced with faithful persistence, can gradually remake the whole person. However, the Lord has yet another way of rewarding fidelity in meditation: by elevation to a higher manner of praying.
~St. Teresa Benedicta of the Cross from Love for Love