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Purgatorio (purɡaˈtɔːrjo; Italian for "Purgatory") is the second part of Dante's Divine Comedy, following the Inferno and preceding the Paradiso. The poem was written in the early 14th century. It is an allegory telling of the climb of Dante up the Mount of Purgatory, guided by the Roman poet Virgil – except for the last four cantos, at which point Beatrice takes over as Dante's guide. Allegorically, Purgatorio represents the penitent Christian life. In describing the climb Dante discusses the nature of sin, examples of vice and virtue, as well as moral issues in politics and in the Church. The poem posits the theory that all sins arise from love – either perverted love directed towards others' harm, or deficient love, or the disordered or excessive love of good things. Dante portrays Purgatory as an island-mountain in the Southern Hemisphere. This realm is divided into three parts. The bottom slopes of Mount Purgatory (Purgatorio I–IX) have been designated as "Ante-Purgatory" by commentators. Purgatory proper consists of seven levels or terraces (Purgatorio X–XXVII) of suffering and spiritual growth, associated with the seven deadly sins. Finally, the Earthly Paradise is located at the top of the mountain (Purgatorio XXVIII–XXXIII). As described in the Inferno, the first twenty-four hours of Dante's journey took place on earth and started on the evening of Maundy Thursday, 24 March (or 7 April) 1300 (Inf. I and II), and the next full day (Good Friday) was spent exploring the depths of Hell with Virgil as a guide (Inf. III–XXXIV.69). Dante and Virgil spent the next day ascending from Hell to see the stars (Inf. XXXIV.70–139). They arrive at the shore of the Mountain of Purgatory – the only land in the Southern Hemisphere – at 6 am on Easter Sunday, which is 6 pm on Sunday in Jerusalem, since the two points are antipodal. Dante describes Hell as existing underneath Jerusalem, having been created by the impact of Lucifer's fall; the Mountain of Purgatory was created by a displacement of rock caused by the same event.