Иоанн Лествичник
The Ladder of Divine Ascent, or Ladder of Paradise (Κλίμαξ; "Scala" or "Climax Paradisi"), is an important ascetical treatise for monasticism in Eastern Christianity written by John Climacus in ca. AD 600 at the request of John, Abbot of Raithu, a monastery located on the shores of the Red Sea.