For nearly a thousand years, monks of the Carthusian Order have withdrawn from the world so they can place themselves in the presence of God. Alone in their cells, they pray, work, and take their meals, freed from worldly distractions and the cacophony of thoughts that course through your mind and mine, when, at the end of busy days, we finally kneel down to pray. A thousand years' silence has enabled the Carthusians to perfect a way of praying suited for the cloister, but it's also right for those of us whose obligations force us to work and pray in the rush and hurry of the world. In these pages, the monk Augustin Guillerand reveals the secret of the Carthusian's remarkable prayer of the presence of God, a habit of tranquil listening that allows God to enter our souls and establish His presence there.