On the Soul and the Resurrection is a philosophical and theological dialogue between St. Gregory of Nyssa and St. Macrina, when she was on her deathbed, and he was freaking out. (Another brother, St. Basil the Great, had just died a few months back, and St. Gregory was still mourning him when he found out his eldest sister was about to kick the bucket, too.) It’s probably fictionalized for educational purposes, but also seems to try to preserve St. Macrina’s teaching as faithfully as possible. I think you’ll find it interesting, especially once it really gets rolling next week.
This dialogue comes chronologically right after Part 2 and before Part 3 of The Life of St. Macrina. I’ll finish up The Life next week or so (there’s about three parts to go); but On the Soul and the Resurrection will take a lot longer.