This paper is to surfie the purgatorial vision in Eliot's later poems. In Dante's Commedia we have a Paradiso and an Inferno, and two intermediate worlds on the surface of this earth. One is the world of experience that permeates the whole poem by allusion and illustration. The other is the mountain of the purgatorio, where Dante journeys upward in quest of innocence and reaches the Garden of the Eden. Eliot's later poems belong to his purgatorial vision. Ash Wednesday presents us with a desert, a garden and a stairway between them. The stairway is the escalina or winding mountain of Dante's purgatory. In St. John of the Cross the dark night of the soul is described as a spiritual dryness like that of a desert, and here again is a ladder, equated with the figure of the ten stairs of St. Benedict referred to in "Burnt Norton." Desert and garden are central symbols in our literary and religious tradition, and a number of complexes of this symbolism have become so closely associated as to be readily identified.