In the Purgatorio, Dante struggles up the terraces of Mount Purgatory, still guided by Virgil, in continuation of his difficult ascent to purity.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.

How is this book unique?

A Latin treatise on secular and religious power by Dante Alighieri, who wrote it between 1312 and 1313.