Иоанн Лествичник
A similar idea is recommended in the "Ladder of Divine Ascent" of John Climacus (circa 523–606), who recommends the regular practice of a "monologistos", or one-worded "Jesus Prayer". The use of the Jesus Prayer according to the tradition of the "Philokalia" is the subject of the 19th century anonymous Russian spiritual classic "The Way of a Pilgrim", also in the original form, without the addition of the words "a sinner".