The Divine Comedy by Dante, Illustrated, Purgatory, Complete

On the surface, the poem describes Dante's travels through Hell, Purgatory, and Heaven; but at a deeper level, it represents, allegorically, the soul's journey towards God. At this deeper level, Dante draws on medieval Christian theology and philosophy, especially Thomistic philosophy and the Summa Theologica of Thomas Aquinas. Consequently, the Divine Comedy has been called "the Summa in verse".