Gnostic Writings on the Soul consists of two works: the first is "The Exegesis of the Soul," which was discovered in the Nag Hammadi find, and the second is "The Hymn of the Soul," rediscovered in the nineteenth century in both a Greek and a Syriac version. Although different stories, both are allegories of the falling of the soul from heaven into gross materiality, and then a redemption and return of the soul to the heavenly father.
The introduction to the book by Andrew Phillip Smith is excellent. His explanation of the three-part definition of the word soul in a Gnostic context should be kept in mind when reading other Gnostic texts. The precision of his definition is in sharp contrast to the mushy commentary of the more famous Elaine Pagels and Elizabeth King in their sloppy commentary on The Gospel of Judas.
The annotations are insightful; especially when they connect these Gnostic texts to the Hebrew Bible and the New Testament.