"The descent of the mind into the heart by the way of breathing is suggested for the case of anyone who does not know where to hold his attention, or where the heart is; but if you know, without this method, how to find the heart, choose your own way there. Only one thing matters - to establish yourself in the heart."
- St. Theophan the Recluse. "The Way of Breathing." The Art of Prayer: An Orthodox Anthology, Timothy Ware, ed., Faber and Faber, 1966, p. 198.