How to Pray, Episode 13: From Meditation to Contemplation – He does not know what is the matter,

all at once God has retired to a distance. It is absolutely impossible to move the heart. He remains cold, frozen. Père Gabriel de Ste Marie-Madeleine

The Mystic Way – A naked intention directed to God, and himself alone, is wholly sufficient. The Cloud of Unknowing

The Prayer of the Heart – I called with my whole heart, says the Psalmist, that is, with my body, soul, and spirit. Saint John Climacus